RANKING · 2024 ACS · 500 SHOWN OF 3,144

Youngest by median age, US counties

US counties with the youngest median age (2024 ACS). Madison County, Idaho leads at 21.4. 3,144 counties qualify in total. South Dakota carries 6 of the top 25 entries. The median across all 3,144 is 41.5. Biggest climber in the top 100 since 2020: McMullen County, TX, up 2,761 places to #84.

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SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPMEDIAN AGEVS 2000

USUnited States334,922,49938.9–

01▲1Madison County, IDID55,17221.4+3%

02▼1Lexington, VAVA7,76922.6−3%

03▲10Buffalo County, SDSD1,80222.8−3%

04Radford, VAVA17,24323.3+2%

05Kusilvak Census Area, AKAK7,93223.6–

06▲1Williamsburg, VAVA15,86123.7+5%

07▼1Chattahoochee County, GAGA8,46524.4+5%

08Clay County, SDSD15,03124.90%

09▼6Harrisonburg, VAVA50,83925.0+11%

10▲8Oktibbeha County, MSMS51,89625.5+3%

11▼2Todd County, SDSD8,86325.5+18%

12▼2Riley County, KSKS72,59825.5+7%

13▲1Utah County, UTUT759,85925.8+11%

14▲596Jim Hogg County, TXTX4,55526.1−23%

15▲1Cache County, UTUT145,00026.2+10%

16▼5Whitman County, WAWA48,51226.4+7%

17▼2Brazos County, TXTX249,08826.8+14%

18▼1Story County, IAIA101,29126.9+2%

19▲7Geary County, KSKS36,33827.1−7%

20▲76Bennett County, SDSD3,30727.4−6%

21▲3Onslow County, NCNC217,17527.7+11%

22▲10Payne County, OKOK83,88927.70%

23▲78Dewey County, SDSD5,41927.7+5%

24▼5Pulaski County, MOMO54,44227.8−2%

25▲13Brookings County, SDSD37,63528.0+5%

26▲17Sioux County, NDND3,66728.2+18%

27▼15Oglala Lakota County, SDSD13,33828.2–

28▲14Lincoln Parish, LALA48,36028.6+8%

29▲2Albany County, WYWY38,55828.6+7%

30▲28Lynchburg, VAVA81,34728.6−19%

31▼9Northwest Arctic, AKAK7,09528.8+21%

32▲4Tippecanoe County, ININ190,45628.8+6%

33▲11Christian County, KYKY70,11528.8+3%

34▼13Bethel Census Area, AKAK18,39129.0+15%

35▲55Kleberg County, TXTX30,31529.0−1%

36▼6Liberty County, GAGA70,31329.0+16%

37Thurston County, NENE6,75229.2−2%

38▼15Gaines County, TXTX23,95629.3−1%

39▲1Adams County, WAWA21,48829.3−1%

40▲1Nome Census Area, AKAK9,83029.4+7%

41▲43Starr County, TXTX66,31929.4+13%

42▼17Clarke County, GAGA129,92129.6+17%

43▲4Corson County, SDSD3,78129.9+6%

44▲53Dallam County, TXTX7,50829.9−5%

45▲146Reagan County, TXTX3,16630.0−7%

46▼7Wayne County, NENE10,02030.0+8%

47▲1Webb County, TXTX281,22430.0+13%

48▲30Isabella County, MIMI64,69130.1+20%

49▼3Adair County, MOMO25,68430.2+8%

50▼22Iron County, UTUT67,14130.2+25%

51▼31Montgomery County, VAVA98,43430.2+17%

52▲105Maverick County, TXTX58,82330.3+9%

53▲7Hidalgo County, TXTX921,54930.5+12%

54▼25Bulloch County, GAGA86,94930.5+17%

55▲407Echols County, GAGA3,68530.5+3%

56▼7Juab County, UTUT13,56730.6+15%

57▼2Latah County, IDID41,84230.6+10%

58▼13Lafayette County, MSMS59,59730.7+14%

59▼9Champaign County, ILIL209,97230.7+7%

60▲217Zavala County, TXTX9,03730.8+6%

61▲6Grand Forks County, NDND74,50130.9+6%

62▲69Roosevelt County, MTMT10,24230.9−4%

63▼9Franklin County, WAWA102,61230.9+10%

64▼2Johnson County, IAIA160,04431.0+9%

65▼13Seward County, KSKS21,07331.0+7%

66▲499Clark County, IDID78331.1+1%

67▲16Moore County, TXTX21,89131.2+3%

68▼12Monroe County, ININ143,34531.2+13%

69▲53Deaf Smith County, TXTX18,62631.3+2%

70▲55Waller County, TXTX69,85831.3+4%

71▼38Watauga County, NCNC54,78631.4+5%

72▲42Ector County, TXTX173,80131.4−2%

73▲568Oldham County, TXTX1,78331.4−5%

74▲14Johnson County, MOMO56,67031.5+11%

75▼22McKenzie County, NDND15,19231.5−20%

76▲142Pike County, ALAL33,68831.6−3%

77▲17Blue Earth County, MNMN70,63431.6+6%

78▲13Douglas County, KSKS120,92031.6+19%

79▼16Dillingham Census Area, AKAK4,48331.7+10%

80▲27Rowan County, KYKY24,47631.7+6%

81▲5Merced County, CACA297,26031.8+10%

82▲164Hamlin County, SDSD6,90031.8−16%

83▼9Williams County, NDND41,76731.8−20%

84▲2,761McMullen County, TXTX54431.8−26%

85▲31Lowndes County, GAGA122,86731.8+5%

86▼16Big Horn County, MTMT12,75231.9+7%

87▲25Curry County, NMNM46,65531.9+4%

88▼24Montgomery County, TNTN249,93531.9+6%

89▲34Lubbock County, TXTX328,90631.9+5%

90▲57Nacogdoches County, TXTX66,03531.9+7%

91▼11Finney County, KSKS37,50531.9+14%

92▲178Clark County, ARAR20,93832.0+1%

93▲48Forrest County, MSMS79,03432.0+8%

94▲51Cumberland County, NCNC338,47332.0+8%

95▼23Erath County, TXTX43,91132.0+2%

96▲851Wheeler County, GAGA7,57032.0−11%

97▲31Leon County, FLFL299,04832.0+8%

98▲905Sterling County, TXTX1,34932.1−15%

99▼23Fredericksburg, VAVA30,39332.1+6%

100▼1Tulare County, CACA485,14632.1+10%

101▲35Yolo County, CACA224,41032.1+9%

102▲101Hamilton County, KSKS2,50032.1−15%

103▲49Houghton County, MIMI37,84232.2−5%

104▲2,402Borden County, TXTX56732.2−20%

105▼37Tooele County, UTUT87,46132.2+19%

106Bell County, TXTX402,24832.3+11%

107▲133Yoakum County, TXTX7,43832.3−5%

108▲7Zapata County, TXTX13,75332.3+5%

109▼17Alachua County, FLFL290,02832.3+11%

110▼45Ford County, KSKS33,99332.3+8%

111▼30Roosevelt County, NMNM18,61532.3+9%

112▼55Tompkins County, NYNY104,04732.3+13%

113▲11Frio County, TXTX18,82332.3+5%

114▲91Val Verde County, TXTX47,83532.3+5%

115▼5Vernon Parish, LALA45,09132.4+14%

116▲116Jackson County, ILIL52,50132.4+18%

117▼12Fairbanks North Star, AKAK93,97232.5+10%

118▼33Washington County, ARAR271,21332.5+6%

119▼1Kings County, CACA154,32732.5+8%

120▲24Dakota County, NENE21,68732.5+4%

121▼26Lea County, NMNM74,74932.5−2%

122▲24Rolette County, NDND11,68832.5+12%

123▼54Davis County, UTUT381,22732.5+21%

124▼3Benson County, NDND5,75932.6+4%

125▲175Prince Edward County, VAVA22,39132.6+3%

126▼17Kern County, CACA927,06832.7+7%

127▼45Boone County, MOMO191,74632.7+11%

128▼69Holmes County, OHOH44,97032.7+17%

129▲40Cameron County, TXTX433,94632.7+13%

130▼69Monongalia County, WVWV107,99132.7+8%

131▲57DeKalb County, ILIL101,83532.7+15%

132▼81LaGrange County, ININ41,30532.7+11%

133▼56Norfolk, VAVA231,01332.7+10%

134▼17Tuscaloosa County, ALAL241,36832.8+3%

135▼32Coconino County, AZAZ144,36832.8+11%

136▲3Cass County, NDND201,79432.8+5%

137▼10Custer County, OKOK28,17532.80%

138▼63Coryell County, TXTX85,59232.8+18%

139▼6Midland County, TXTX187,85532.8−4%

140▼51Jefferson County, IDID35,29732.8+14%

141▲169Liberty County, TXTX121,36432.9−3%

142▲94Pitt County, NCNC182,93633.0+9%

143▼43Texas County, OKOK20,32233.0+9%

144▼40Andrews County, TXTX18,91433.0−3%

145▲65Taylor County, TXTX150,07733.1+3%

146▼111Charlottesville, VAVA44,38833.1+29%

147▼39Elmore County, IDID29,46533.1+14%

148▲158Lyon County, KSKS32,26633.1+7%

149▲59Imperial County, CACA181,41133.2+7%

150▼116Athens County, OHOH63,19733.2+29%

151▼78Uintah County, UTUT38,27833.2+14%

152▲29Prince George County, VAVA43,93633.2+3%

153▲89Alamosa County, COCO16,68833.2+8%

154▼24Cassia County, IDID26,39733.2+7%

155▲17Adams County, ININ36,65033.2+1%

156▲19Ellis County, KSKS29,07533.2+2%

157▲21Yakima County, WAWA259,18533.3+7%

158▼2Warren County, KYKY149,37533.3+3%

159▼19Ingham County, MIMI289,70933.3+10%

160▼6Bailey County, TXTX6,96333.3−5%

161▲4Ochiltree County, TXTX9,28433.3−1%

162▼7Morgan County, UTUT13,38333.3+17%

163▲4Franklin County, IDID15,88933.3+20%

164▼38Box Elder County, UTUT65,32033.3+19%

165▲303Natchitoches Parish, LALA36,08933.4+11%

166▼55Glacier County, MTMT13,46333.4+9%

167▲9Grant County, KSKS7,02833.4+6%

168▼33Fresno County, CACA1,035,45633.5+12%

169▲638Duval County, TXTX9,40233.6−1%

170▲43Crawford County, KSKS39,00833.6−1%

171▼58Ward County, NDND68,23333.6+4%

172▲8El Paso County, TXTX877,85833.6+12%

173▼44Bonneville County, IDID135,77133.6+6%

174▼87Lake and Peninsula, AKAK1,35733.7+15%

175▼12Clay County, MNMN67,73433.7+4%

176▼34Nodaway County, MOMO20,17433.7+12%

177▼13Jefferson County, NYNY111,54033.7+4%

178▼59Weber County, UTUT278,17433.7+15%

179▲8Clayton County, GAGA297,47133.7+12%

180▲4Grant County, WAWA105,72733.7+8%

181▲77Kaufman County, TXTX209,23533.8−3%

182▼33Sioux County, IAIA36,77433.8+3%

183▼25Sanpete County, UTUT31,45333.8+34%

184▼91Suffolk County, MAMA791,89133.9+7%

185▲29Stevens County, MNMN9,74733.90%

186▼33Hoke County, NCNC56,93933.9+13%

187▲2,175Jones County, SDSD91333.9−18%

188▼122Lee County, ALAL189,88134.0+24%

189▲32McLennan County, TXTX272,02034.0+7%

190▼111Long County, GAGA21,55734.0+28%

191▼43Jerome County, IDID26,36234.0+3%

192▼72Salt Lake County, UTUT1,220,91634.0+18%

193▲3Faulkner County, ARAR133,97934.1+10%

194▲62East Baton Rouge Parish, LALA456,18034.1+8%

195▼36Comanche County, OKOK122,15834.1+13%

196▼98Hays County, TXTX304,39034.1+20%

197▼15Dallas County, TXTX2,661,39734.1+10%

198▼61Duchesne County, UTUT20,85634.1+20%

199▲267Columbia County, ARAR21,89434.2−4%

200▼57Gallatin County, MTMT128,74034.2+11%

201▼130Centre County, PAPA157,39334.2+19%

202▼10Rutherford County, TNTN386,35234.2+10%

203▼17Yuba County, CACA88,69134.2+9%

204▲11Lancaster County, NENE334,04934.3+7%

205▲118Doña Ana County, NMNM229,09134.3+14%

206▲42Woods County, OKOK8,44334.3−9%

207▼57Jackson County, SDSD2,66634.3+12%

208▲44McLean County, ILIL171,41934.3+12%

209▼5Wyandotte County, KSKS170,59734.3+6%

210▲147Willacy County, TXTX19,97134.3+15%

211▼4Menominee County, WIWI4,19934.3+24%

212▲86Richland County, SCSC434,95634.4+6%

213▲105Hale County, TXTX31,81934.4+10%

214▲232Reeves County, TXTX12,13834.4+7%

215▲120Millard County, UTUT14,05734.4+15%

216Marion County, ININ992,19634.4+2%

217▼23Beaver County, UTUT7,30134.4+12%

218▼23Newport News, VAVA183,23034.4+7%

219▲46Hill County, MTMT16,16734.50%

220▼88Benton County, OROR97,72834.5+11%

221▲115Castro County, TXTX7,29534.5+7%

222▼71Craighead County, ARAR116,95734.5+5%

223▲38Daviess County, ININ34,20934.5−3%

224▲250Uvalde County, TXTX24,96334.5+7%

225▲82Ward County, TXTX11,12534.5−4%

226▼65Davidson County, TNTN745,90434.6+1%

227▼42Harris County, TXTX5,045,02634.6+11%

228▲5Madera County, CACA167,92734.6+6%

229▼39McKinley County, NMNM68,11934.6+29%

230▲73Santa Barbara County, CACA442,06534.6+4%

231▲37Power County, IDID8,24634.6+9%

232▲109Sevier County, ARAR15,75834.7+3%

233▲149Leflore County, MSMS25,68634.7+15%

234▼3San Bernardino County, CACA2,224,09134.7+15%

235▼133Richmond, VAVA237,25734.7+2%

236▼25Camden County, GAGA60,14334.7+23%

237▲59Madison County, KYKY101,69634.7+13%

238▼3Rockland County, NYNY357,39734.8−4%

239▼66Stark County, NDND34,01334.8−6%

240▼11Bexar County, TXTX2,160,08834.8+8%

241▼58Franklin County, OHOH1,361,53634.8+7%

242▼49Adams County, COCO554,66834.8+11%

243▲230Dawson County, TXTX11,77634.8−2%

244▼38Manassas, VAVA44,33234.8+11%

245▲81Titus County, TXTX31,56334.9+10%

246▲1,260Randolph County, GAGA6,15634.9−3%

247▼87Graham County, AZAZ40,15734.9+13%

248▼47Canyon County, IDID275,12334.9+14%

249▲37Stanislaus County, CACA557,71934.9+10%

250▼84District of Columbia, DCDC693,64534.9+1%

251▲9Minidoka County, IDID22,91134.9+4%

252▲186McDonough County, ILIL25,91634.9+20%

253▼115North Slope, AKAK10,58235.0+30%

254▲91Kalamazoo County, MIMI263,79535.0+7%

255▼58Washtenaw County, MIMI370,21435.0+12%

256▼26Crane County, TXTX4,55435.0+2%

257▲524Trousdale County, TNTN12,62335.0−8%

258▲29Bryan County, GAGA52,06235.0+5%

259▼34Bingham County, IDID51,15335.0+18%

260▼48San Juan County, UTUT14,54235.0+37%

261▼6Kodiak Island, AKAK12,38735.1+11%

262▲109Stearns County, MNMN164,11035.1+11%

263▼84Claiborne County, MSMS8,05835.1+37%

264▼55Buffalo County, NENE51,17235.1+17%

265▲9Jackson County, OKOK24,76435.1+6%

266▲42Chambers County, TXTX57,59435.10%

267▲119Potter County, TXTX114,45335.1+9%

268▼29Winkler County, TXTX7,54035.10%

269▼10El Paso County, COCO757,04035.1+6%

270▼16Anchorage, AKAK287,15535.2+9%

271▲11Richmond County, GAGA206,55935.2+9%

272▲295Whitley County, KYKY37,29735.2−1%

273▲183Hardin County, OHOH30,07235.2+6%

274▼17Tarrant County, TXTX2,248,46635.2+9%

275▲3Oklahoma County, OKOK822,12535.2+3%

276▼59Bannock County, IDID91,59135.2+18%

277▲312Madison Parish, LALA8,84435.3+18%

278▲11Beltrami County, MNMN47,05535.3+12%

279▲136Saline County, MOMO23,26535.3−5%

280▲2,698De Baca County, NMNM1,64735.3−19%

281▼107Denver County, COCO740,61335.3+7%

282▼80Weld County, COCO378,42635.3+14%

283▲108Thomas County, KSKS7,72535.30%

284▼22Fayette County, KYKY329,75135.3+7%

285▼59Philadelphia County, PAPA1,574,28135.3+3%

286▲54Wichita County, TXTX129,55535.3+6%

287▼16San Joaquin County, CACA823,81535.4+11%

288▲400Mahnomen County, MNMN5,15335.4−7%

289▼52Mountrail County, NDND9,39535.4−11%

290▲806Garza County, TXTX4,51035.4+1%

291▲117Hansford County, TXTX4,94435.4−3%

292▼68Cleveland County, OKOK303,97335.4+10%

293▲63Carroll County, GAGA131,03635.4+9%

294▲20Muscogee County, GAGA202,17135.4+9%

295▼61Monterey County, CACA433,72935.5+12%

296▼97Colfax County, NENE10,93435.5+1%

297▲600La Salle County, TXTX6,51735.5+8%

298▼127Arlington County, VAVA243,93135.5+4%

299▼49Mecklenburg County, NCNC1,233,38335.5+7%

300▼31Milwaukee County, WIWI924,21635.5+5%

301▼139Travis County, TXTX1,389,67035.6+17%

302▼104Blaine County, MTMT6,86035.6+3%

303▲60Dawson County, NENE24,45235.6+4%

304▼76Douglas County, NENE606,46035.6+6%

305▼1Elkhart County, ININ208,77435.6+8%

306▼1Buena Vista County, IAIA20,44935.6−2%

307▼62Harnett County, NCNC150,13735.6+10%

308▲498Sumter County, ALAL11,58835.7+11%

309▲233Bee County, TXTX32,51535.7+12%

310▼83Nobles County, MNMN22,33835.7−5%

311▼38Sarpy County, NENE208,30335.7+13%

312▼144Elko County, NVNV54,81535.7+14%

313▲247Jim Wells County, TXTX38,80435.7+9%

314▼12Dane County, WIWI590,37535.7+8%

315▲297Dimmit County, TXTX8,02435.7+13%

316▲96Black Hawk County, IAIA131,53235.7+4%

317▼20Phelps County, MOMO45,24735.8+3%

318▲75Dawes County, NENE7,85835.8+17%

319▼25Eau Claire County, WIWI109,03335.8+10%

320▼97Hudson County, NJNJ735,03335.8+7%

321▲166Hardee County, FLFL25,93235.8+9%

322▼55Hendry County, FLFL48,27635.8+21%

323▲76Delaware County, ININ113,10635.8+6%

324▲559Petersburg, VAVA33,73435.8−3%

325▲138Kittitas County, WAWA48,80335.8+14%

326▼63Benton County, ARAR332,55435.9+2%

327▼46Colusa County, CACA21,83635.9+14%

328▲42Shelby County, TNTN910,22635.9+9%

329▲167Calloway County, KYKY39,42135.9+4%

330▲51Tangipahoa Parish, LALA141,34635.9+11%

331▼47Kent County, MIMI675,23235.9+10%

332▲148Coahoma County, MSMS19,84935.9+18%

333▲306Pontotoc County, MSMS32,09635.9+3%

334▲49Scott County, MSMS28,07335.9+6%

335▼97Lincoln County, SDSD77,14535.9+6%

336▼61Childress County, TXTX6,64335.9−2%

337▲161Gregg County, TXTX126,09535.9+3%

338▲107Hockley County, TXTX21,60035.9+8%

339▲97Portsmouth, VAVA96,77735.9+4%

340▲164Atkinson County, GAGA8,45435.9+17%

341▲168Buena Vista, VAVA6,67235.9−5%

342▲18Putnam County, TNTN86,61236.0+5%

343▼52Bronx County, NYNY1,406,33236.0+15%

344▲10Garfield County, OKOK61,77936.0−5%

345▲10Tulsa County, OKOK698,78236.0+5%

346▲75Charles Mix County, SDSD9,30336.0+1%

347▼20Tom Green County, TXTX120,60236.0+7%

348▼29Minnehaha County, SDSD212,69136.0+7%

349▲41Coffee County, GAGA44,40736.0+12%

350▼20Gwinnett County, GAGA1,018,09936.0+11%

351▼13Sedgwick County, KSKS538,43336.0+7%

352▲87Yuma County, AZAZ224,44936.1+6%

353▲27San Benito County, CACA70,08236.1+15%

354▼64Ramsey County, MNMN541,62336.1+7%

355▼33Hall County, NENE63,63336.1+1%

356▼109Orange County, NCNC152,49836.1+19%

357▲214Malheur County, OROR32,26136.1+6%

358▼59Lyman County, SDSD3,69436.1+5%

359▲123Atascosa County, TXTX53,59036.1+12%

360▼49Twin Falls County, IDID97,53936.1+3%

361▼49Dunn County, WIWI46,22336.1+18%

362▲496Decatur County, IAIA7,65536.1−1%

363▼84Dallas County, IAIA118,45736.1+3%

364▼48Woodbury County, IAIA106,64936.1+6%

365▲61Atchison County, KSKS16,17236.10%

366▲173Todd County, KYKY12,97236.1+1%

367▼123Durham County, NCNC347,24036.1+12%

368▲156Crittenden County, ARAR46,21036.2+13%

369▲182Butte County, CACA209,21136.2+1%

370▲123Glenn County, CACA28,14136.2+7%

371▲33Wood County, OHOH134,17636.2+11%

372▲180Wicomico County, MDMD106,89936.2+1%

373▼90Baltimore, MDMD569,99736.2+3%

374▲40Benton County, MNMN41,74436.2+13%

375▼90Eddy County, NMNM62,50936.2−1%

376▼52Pickens County, SCSC139,19836.2+11%

377▼136St. Bernard Parish, LALA45,64236.2−1%

378▼29Allen County, ININ402,32936.2+6%

379▼47Polk County, IAIA516,54636.2+5%

380▼203Greenlee County, AZAZ9,31236.3+8%

381▲273George County, MSMS26,33136.3+9%

382▲290Holmes County, MSMS15,46536.3+22%

383▼119Tunica County, MSMS8,81936.3+19%

384▲529Luna County, NMNM25,40736.3−1%

385▼68Canadian County, OKOK187,18936.3+3%

386▲34Morrow County, OROR12,60236.3+9%

387▼2Ellis County, TXTX240,86736.3+9%

388▲852Lipscomb County, TXTX2,95536.3−8%

389▼219Parmer County, TXTX9,67836.3+13%

390▼89Prince William County, VAVA502,96636.3+14%

391▼63Stafford County, VAVA170,80336.3+10%

392▼170Campbell County, WYWY48,14536.3+13%

393▼25Houston County, GAGA178,21436.3+7%

394▼79Kendall County, ILIL145,47036.3+6%

395▲94Vigo County, ININ106,51236.3+4%

396▼65Davis County, IAIA9,23036.3−6%

397▼38Benton County, WAWA221,72236.3+6%

398▲57Winona County, MNMN50,52336.4+11%

399▲32Otero County, NMNM70,36836.4+8%

400▲192Robeson County, NCNC119,94136.4+14%

401▲311Swisher County, TXTX6,70336.4+5%

402▲7Greene County, MOMO309,28636.4+4%

403▼55Scott County, KYKY62,26236.4+12%

404▼16Livingston Parish, LALA155,03636.4+11%

405▼39Barrow County, GAGA99,77336.4+12%

406▼93DeKalb County, GAGA774,39436.4+13%

407▼119Fulton County, GAGA1,098,79136.4+11%

408▼75Pottawatomie County, KSKS27,18636.4+1%

409▼156Kings County, NYNY2,653,96336.5+10%

410▼49Lafayette Parish, LALA257,94936.5+13%

411▼77Ottawa County, MIMI308,45936.5+13%

412▼20Scotland County, MOMO4,79636.5−2%

413▲12Sutter County, CACA98,78736.5+7%

414▲230Baldwin County, GAGA44,02936.5+7%

415▼17Lumpkin County, GAGA36,17836.5+12%

416▼282Manassas Park, VAVA16,56036.5+20%

417▲200Apache County, AZAZ64,44536.6+36%

418▼76Ascension Parish, LALA135,10536.6+14%

419▲169LaSalle Parish, LALA15,15436.6+1%

420▼58Ouachita Parish, LALA158,54236.6+13%

421▲787Emporia, VAVA5,44736.6−6%

422▲328Fairfax, VAVA26,77236.6−1%

423▲153Grant County, KYKY26,18136.6+12%

424▼129Orange County, FLFL1,528,00236.6+10%

425▲155Dougherty County, GAGA82,61636.6+14%

426▲762Turner County, GAGA8,98336.6+10%

427▼90Whitfield County, GAGA106,21236.6+11%

428▲62West Baton Rouge Parish, LALA28,75636.6+8%

429▼77Matanuska-Susitna, AKAK118,66636.7+8%

430▼87Bossier Parish, LALA131,86736.7+9%

431▼404Ziebach County, SDSD2,38936.7+54%

432▼10Brazoria County, TXTX419,08036.7+8%

433▼59Mitchell County, TXTX8,94736.7−5%

434▲190Navarro County, TXTX57,18136.7+4%

435▼71Randall County, TXTX152,35136.7+5%

436▲65Clark County, WIWI35,05236.7+2%

437▼27St. Joseph County, ININ272,86136.7+7%

438▲192Clinton County, ININ33,32236.7+3%

439▲101Howard County, TXTX30,50436.7+1%

440▲101Victoria County, TXTX92,65636.7+7%

441▼120Jasper County, MOMO127,42836.8+5%

442▼170St. Louis, MOMO278,14436.8+9%

443▲87Hunt County, TXTX123,33636.8+4%

444▼71Madison County, TXTX14,22636.8+10%

445▼179Wasatch County, UTUT38,51436.8+25%

446▲15Hampton, VAVA137,31536.8+8%

447▲39Larimer County, COCO377,29236.8+11%

448▲2,170Camas County, IDID1,31636.8−7%

449▲114Bibb County, GAGA157,55636.8+6%

450▼199Lanier County, GAGA10,62336.8+11%

451▲130Newton County, GAGA125,58336.8+11%

452▼94Sevier County, UTUT22,82736.8+21%

453▼51Winchester, VAVA28,27236.8+5%

454▲10Grant County, WIWI52,44636.8+3%

455▲72Hinds County, MSMS211,88836.9+16%

456▲1Umatilla County, OROR81,11936.9+7%

457▼73Berkeley County, SCSC274,66636.9+15%

458▲339Gray County, TXTX20,91936.9−5%

459▲40Pecos County, TXTX14,56036.9+18%

460▼73Scurry County, TXTX16,16236.90%

461▼38Hamilton County, OHOH838,41836.9+4%

462▲71Duval County, FLFL1,062,96336.9+8%

463▲42Douglas County, GAGA154,29336.9+9%

464▼95Paulding County, GAGA190,99636.9+18%

465▼112Pope County, ARAR64,97637.0+6%

466▼63Riverside County, CACA2,544,91637.0+12%

467▼61Jackson County, MOMO732,99437.0+5%

468▲44Webster County, MOMO43,05437.0+7%

469▲276Cortland County, NYNY45,85037.0+8%

470▼27Orange County, NYNY417,66937.0+7%

471▼52Bryan County, OKOK51,36737.0+3%

472▲187Bastrop County, TXTX118,90837.0+5%

473▼197Denton County, TXTX1,069,34637.0+19%

474▲9Jefferson County, TXTX254,32137.0+5%

475▼182Terry County, TXTX11,72037.0+6%

476▲86San Patricio County, TXTX72,05337.0+16%

477▼53Sherburne County, MNMN104,19437.0+18%

478▼81Effingham County, GAGA74,39737.0+10%

479▲123Troup County, GAGA72,84437.0+7%

480▼291Haskell County, KSKS3,59937.0+20%

481▼52Pierce County, WAWA946,28837.0+9%

482▲104Montgomery County, ALAL225,89137.1+11%

483▼7Cape Girardeau County, MOMO83,99937.1+5%

484▲287Acadia Parish, LALA57,03237.1+10%

485▼7Rice County, MNMN69,93937.1+13%

486▲354Sunflower County, MSMS22,89337.1+23%

487▲41Missoula County, MTMT123,51337.1+12%

488▼70Beckham County, OKOK22,15937.1+1%

489▼164Cochran County, TXTX2,54637.1+6%

490▼6Johnson County, TXTX218,04837.1+8%

491▲82Lamb County, TXTX12,57937.1+2%

492▼23Uinta County, WYWY20,72837.1+18%

493▼164East Carroll Parish, LALA6,76037.1+20%

494▲27Osceola County, FLFL481,71837.1+7%

495▲719Charlton County, GAGA13,12137.1+11%

496▲38Henry County, GAGA264,92237.1+11%

497▲581Greeley County, KSKS1,18237.1−4%

498▼255Kearny County, KSKS3,88837.1+17%

499▲533Ottawa County, OKOK30,43837.20%

500▼41Nueces County, TXTX352,99237.2+12%

SHOWING 1–500 OF 3,144

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Download CSV (full list, 3,144 rows)

UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES

Frequently asked

Which county has the lowest median age?

Madison County, Idaho ranks #1 with 21.4 (2024 American Community Survey).

What are the top 5 counties by median age?

Madison County, Idaho, Lexington, Virginia, Buffalo County, South Dakota, Radford, Virginia, Kusilvak Census Area, Alaska.

How many counties are in this ranking?

3,144 counties qualify after filtering for population minimums and data availability. The ranking covers 2024 ACS 5-year data.

How is median age measured?

Median age of all residents. Source: US Census Bureau, American Community Survey 5-year estimates (2024).