RANKING · 1990 CENSUS · 500 SHOWN OF 3,122

Youngest by median age, US counties · 1990

US counties with the youngest median age (2023 ACS). Madison County, Idaho leads at 20.0. 3,122 counties qualify in total. Utah carries 5 of the top 25 entries.

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SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPMEDIAN AGEVS 2000

01Madison County, IDID55,17220.0−4%

02Todd County, SDSD8,86320.6−5%

03Radford, VAVA17,24321.9−4%

04Buffalo County, SDSD1,80222.2−5%

05Utah County, UTUT759,85922.5−3%

06Chattahoochee County, GAGA8,46522.6−3%

07Sioux County, NDND3,66722.9−4%

08Northwest Arctic, AKAK7,09522.9−4%

09Williamsburg, VAVA15,86123.1+2%

10Lexington, VAVA7,76923.5+1%

11Apache County, AZAZ64,44523.6−13%

12Cache County, UTUT145,00023.7−1%

13Claiborne County, MSMS8,05823.8−7%

14Riley County, KSKS72,59823.8−0%

15Clay County, SDSD15,03124.0−4%

16Starr County, TXTX66,31924.0−8%

17San Juan County, UTUT14,54224.0−6%

18Liberty County, GAGA70,31324.1−4%

19Brazos County, TXTX249,08824.1+2%

20Harrisonburg, VAVA50,83924.2+7%

21Sanpete County, UTUT31,45324.2−4%

22Whitman County, WAWA48,51224.4−1%

23Isabella County, MIMI64,69124.5−3%

24Iron County, UTUT67,14124.6+1%

25Menominee County, WIWI4,19924.6−11%

26Onslow County, NCNC217,17524.6−2%

27Oktibbeha County, MSMS51,89624.7−0%

28Lincoln Parish, LALA48,36024.7−7%

29Vernon Parish, LALA45,09124.7−13%

30Ziebach County, SDSD2,38924.8+4%

31Davis County, UTUT381,22724.8−7%

32Duchesne County, UTUT20,85625.0−12%

33Bethel Census Area, AKAK18,39125.1−1%

34Tunica County, MSMS8,81925.3−17%

35Emery County, UTUT10,17725.4−16%

36Athens County, OHOH63,19725.5−1%

37McKinley County, NMNM68,11925.5−5%

38Clarke County, GAGA129,92125.6+1%

39Coryell County, TXTX85,59225.6−8%

40Maverick County, TXTX58,82325.7−8%

41Webb County, TXTX281,22425.7−3%

42Mecosta County, MIMI42,32025.7−19%

43Montgomery County, VAVA98,43425.7−1%

44Lafayette County, MSMS59,59725.9−4%

45Douglas County, KSKS120,92025.9−3%

46Story County, IAIA101,29125.9−2%

47Uintah County, UTUT38,27826.0−10%

48Millard County, UTUT14,05726.0−13%

49Dewey County, SDSD5,41926.0−2%

50Rowan County, KYKY24,47626.1−12%

51Johnson County, MOMO56,67026.2−8%

52Morgan County, UTUT13,38326.3−8%

53Bulloch County, GAGA86,94926.3+1%

54Brookings County, SDSD37,63526.3−1%

55Lee County, ALAL189,88126.3−4%

56Coconino County, AZAZ144,36826.3−11%

57Hidalgo County, TXTX921,54926.3−3%

58Jefferson County, IDID35,29726.4−8%

59Nome Census Area, AKAK9,83026.4−4%

60Geary County, KSKS36,33826.4−9%

61Rolette County, NDND11,68826.5−8%

62Bolivar County, MSMS28,26226.5−11%

63Monroe County, ININ143,34526.5−4%

64Sharkey County, MSMS3,09726.5−14%

65Rich County, UTUT2,68726.5−23%

66Jackson County, ILIL52,50126.5−4%

67North Slope, AKAK10,58226.6−2%

68Reagan County, TXTX3,16626.6−18%

69Albany County, WYWY38,55826.6−0%

70Navajo County, AZAZ109,94626.7−12%

71Hays County, TXTX304,39026.7−6%

72Tippecanoe County, ININ190,45626.8−2%

73Aleutians West Census Area, AKAK5,24026.8−26%

74Box Elder County, UTUT65,32026.9−4%

75Uinta County, WYWY20,72826.9−14%

76Zavala County, TXTX9,03727.0−7%

77Pulaski County, MOMO54,44227.0−5%

78Centre County, PAPA157,39327.0−6%

79Dillingham Census Area, AKAK4,48327.1−6%

80Payne County, OKOK83,88927.1−2%

81Long County, GAGA21,55727.1+2%

82Lake and Peninsula, AKAK1,35727.2−7%

83Finney County, KSKS37,50527.2−3%

84Cumberland County, NCNC338,47327.3−8%

85Johnson County, IAIA160,04427.3−4%

86Adair County, MOMO25,68427.3−2%

87Tompkins County, NYNY104,04727.3−5%

88DeKalb County, ILIL101,83527.3−4%

89Camden County, GAGA60,14327.3−3%

90McDonough County, ILIL25,91627.4−5%

91Grand Forks County, NDND74,50127.4−6%

92Latah County, IDID41,84227.5−2%

93Norfolk, VAVA231,01327.5−7%

94Cameron County, TXTX433,94627.6−5%

95Manassas Park, VAVA16,56027.6−9%

96Fairbanks North Star, AKAK93,97227.6−6%

97Willacy County, TXTX19,97127.6−7%

98Christian County, KYKY70,11527.7−1%

99Blue Earth County, MNMN70,63427.7−7%

100Kleberg County, TXTX30,31527.7−5%

101Nacogdoches County, TXTX66,03527.7−7%

102Holmes County, OHOH44,97027.7−1%

103Champaign County, ILIL209,97227.8−3%

104Boone County, MOMO191,74627.8−6%

105Holmes County, MSMS15,46527.8−6%

106Franklin County, IDID15,88927.8+0%

107Salt Lake County, UTUT1,220,91627.9−4%

108Elmore County, IDID29,46527.9−4%

109Hardin County, KYKY113,48227.9−17%

110Stearns County, MNMN164,11027.9−12%

111Wasatch County, UTUT38,51427.9−5%

112Watauga County, NCNC54,78628.0−6%

113Humphreys County, MSMS7,00128.0−8%

114East Carroll Parish, LALA6,76028.0−9%

115Tooele County, UTUT87,46128.0+3%

116Dimmit County, TXTX8,02428.0−11%

117Bingham County, IDID51,15328.1−5%

118Meade County, KYKY30,69928.1−13%

119Nodaway County, MOMO20,17428.1−7%

120Big Horn County, MTMT12,75228.1−6%

121Merced County, CACA297,26028.1−3%

122Bell County, TXTX402,24828.1−4%

123El Paso County, TXTX877,85828.1−6%

124Gaines County, TXTX23,95628.1−5%

125Doña Ana County, NMNM229,09128.2−7%

126LaGrange County, ININ41,30528.2−4%

127Lowndes County, ALAL9,35928.2−17%

128Val Verde County, TXTX47,83528.2−8%

129Washington County, UTUT213,67028.2−9%

130Waller County, TXTX69,85828.2−6%

131Glasscock County, TXTX1,12828.2−16%

132Comanche County, OKOK122,15828.3−6%

133Alamosa County, COCO16,68828.3−8%

134Frio County, TXTX18,82328.3−8%

135Fremont County, IDID14,20828.3−11%

136San Juan County, NMNM120,34028.3−9%

137Berkeley County, SCSC274,66628.3−11%

138Alachua County, FLFL290,02828.4−2%

139Gunnison County, COCO17,43928.4−7%

140Kings County, CACA154,32728.4−6%

141Ingham County, MIMI289,70928.4−6%

142Lander County, NVNV5,87228.5−16%

143Jefferson County, MSMS6,82528.5−12%

144Oldham County, TXTX1,78328.5−13%

145Deaf Smith County, TXTX18,62628.5−7%

146Dunn County, WIWI46,22328.6−7%

147Wayne County, NENE10,02028.6+2%

148Montgomery County, TNTN249,93528.6−5%

149Corson County, SDSD3,78128.7+1%

150Sarpy County, NENE208,30328.7−9%

151Southeast Fairbanks Census Area, AKAK7,27028.7−15%

152Prince Edward County, VAVA22,39128.7−9%

153Imperial County, CACA181,41128.8−7%

154Glacier County, MTMT13,46328.8−6%

155Noxubee County, MSMS9,79828.8−11%

156Bonneville County, IDID135,77128.8−9%

157St. John the Baptist Parish, LALA39,87528.9−10%

158Franklin County, WAWA102,61228.9+3%

159Buffalo County, NENE51,17228.9−4%

160Manassas, VAVA44,33228.9−8%

161Lowndes County, GAGA122,86728.9−4%

162Lubbock County, TXTX328,90628.9−5%

163Fredericksburg, VAVA30,39328.9−5%

164Clay County, MNMN67,73428.9−10%

165Weber County, UTUT278,17428.9−1%

166Charlottesville, VAVA44,38828.9+13%

167Yolo County, CACA224,41028.9−2%

168Madison County, KYKY101,69629.0−6%

169Leon County, FLFL299,04829.0−2%

170Sunflower County, MSMS22,89329.0−4%

171Cassia County, IDID26,39729.0−7%

172Zapata County, TXTX13,75329.0−6%

173Kodiak Island, AKAK12,38729.0−8%

174Sherburne County, MNMN104,19429.0−8%

175Virginia Beach, VAVA453,73729.0−11%

176Sevier County, UTUT22,82729.0−4%

177Natchitoches Parish, LALA36,08929.0−4%

178Washington County, MSMS40,44629.0−8%

179Seward County, KSKS21,07329.0+0%

180Sumter County, ALAL11,58829.0−10%

181Monongalia County, WVWV107,99129.0−4%

182McLean County, ILIL171,41929.1−5%

183Forrest County, MSMS79,03429.1−2%

184Orange County, NCNC152,49829.1−4%

185Denton County, TXTX1,069,34629.1−6%

186Santa Cruz County, AZAZ50,02029.1−8%

187Prince William County, VAVA502,96629.1−9%

188Reeves County, TXTX12,13829.1−9%

189Elko County, NVNV54,81529.1−7%

190Magoffin County, KYKY11,11029.2−15%

191Yoakum County, TXTX7,43829.2−14%

192Benton County, MNMN41,74429.2−9%

193Leflore County, MSMS25,68629.2−3%

194Moore County, TXTX21,89129.2−4%

195Terrebonne Parish, LALA104,16329.2−11%

196Otero County, NMNM70,36829.2−14%

197Beltrami County, MNMN47,05529.2−7%

198Ward County, NDND68,23329.2−10%

199St. James Parish, LALA18,93829.3−14%

200Wood County, OHOH134,17629.3−10%

201Washtenaw County, MIMI370,21429.3−6%

202Curry County, NMNM46,65529.3−5%

203Martin County, KYKY10,69729.3−14%

204Jefferson County, NYNY111,54029.3−10%

205Dale County, ALAL49,91229.3−15%

206Coahoma County, MSMS19,84929.3−4%

207Aleutians East, AKAK3,47929.3−21%

208San Bernardino County, CACA2,224,09129.4−3%

209Campbell County, WYWY48,14529.4−9%

210Portage County, WIWI71,94329.4−11%

211St. Martin Parish, LALA51,10629.4−12%

212Lyon County, KSKS32,26629.4−5%

213Plaquemines Parish, LALA22,25629.4−13%

214Madison County, MSMS116,29829.4−12%

215Hudspeth County, TXTX3,43329.4−3%

216Pitt County, NCNC182,93629.4−3%

217Hockley County, TXTX21,60029.5−11%

218Fresno County, CACA1,035,45629.5−1%

219Sumter County, SCSC105,06729.5−12%

220Pierce County, WIWI43,51929.5−8%

221Newport News, VAVA183,23029.5−8%

222Ascension Parish, LALA135,10529.5−8%

223Tallahatchie County, MSMS10,87729.5−11%

224Tulare County, CACA485,14629.5+1%

225Lafourche Parish, LALA95,50529.5−13%

226Travis County, TXTX1,389,67029.5−3%

227Lowndes County, MSMS57,34629.5−10%

228Hoke County, NCNC56,93929.6−1%

229Paulding County, GAGA190,99629.6−5%

230St. Mary's County, MDMD116,69229.6−13%

231Yukon-Koyukuk Census Area, AKAK5,02829.6−5%

232Benton County, OROR97,72829.6−5%

233Rosebud County, MTMT8,25329.6−14%

234Macon County, ALAL18,13229.6−7%

235Bryan County, GAGA52,06229.7−11%

236Mississippi County, ARAR37,82829.7−10%

237Bennett County, SDSD3,30729.7+2%

238Bannock County, IDID91,59129.7−0%

239Bamberg County, SCSC12,79629.7−16%

240Jackson County, OKOK24,76429.7−10%

241Yuba County, CACA88,69129.7−5%

242Lee County, GAGA34,17929.7−9%

243Faulkner County, ARAR133,97929.8−4%

244Cleveland County, OKOK303,97329.8−8%

245Castro County, TXTX7,29529.8−8%

246St. Mary Parish, LALA46,55229.8−13%

247Roosevelt County, NMNM18,61529.8+1%

248Kern County, CACA927,06829.8−3%

249Iberia Parish, LALA66,84629.8−10%

250Jackson County, SDSD2,66629.8−3%

251Andrews County, TXTX18,91429.8−13%

252Dorchester County, SCSC178,39729.8−14%

253Rutherford County, TNTN386,35229.8−4%

254Monterey County, CACA433,72929.8−6%

255Bee County, TXTX32,51529.8−6%

256Dougherty County, GAGA82,61629.9−7%

257Ionia County, MIMI66,55729.9−9%

258Lincoln County, WYWY21,18029.9−19%

259Clayton County, GAGA297,47129.9−1%

260Custer County, OKOK28,17529.9−9%

261Burke County, GAGA24,40829.9−9%

262Madison Parish, LALA8,84429.9+0%

263Assumption Parish, LALA19,72029.9−13%

264Coles County, ILIL46,60729.9−3%

265Gallatin County, MTMT128,74029.9−3%

266Madison County, TXTX14,22629.9−10%

267Lafayette Parish, LALA257,94930.0−8%

268Lumpkin County, GAGA36,17830.0−8%

269Perry County, ALAL7,42530.0−10%

270Power County, IDID8,24630.0−5%

271East Baton Rouge Parish, LALA456,18030.0−5%

272Graham County, AZAZ40,15730.0−3%

273Craven County, NCNC105,02530.0−13%

274Crittenden County, ARAR46,21030.0−6%

275Stafford County, VAVA170,80330.0−9%

276Peach County, GAGA29,87730.0−6%

277Clinton County, NYNY78,13830.0−16%

278Uvalde County, TXTX24,96330.0−7%

279Anoka County, MNMN381,60530.0−11%

280Cibola County, NMNM26,80730.0−9%

281Panola County, MSMS32,69130.1−9%

282Socorro County, NMNM15,83830.1−7%

283Hale County, TXTX31,81930.1−4%

284Rio Arriba County, NMNM39,83230.1−13%

285Meade County, SDSD30,71130.1−10%

286Scott County, MNMN159,01730.1−8%

287Eau Claire County, WIWI109,03330.1−7%

288Quitman County, MSMS5,36430.1−5%

289Anchorage, AKAK287,15530.1−7%

290Grant County, KSKS7,02830.1−4%

291Summit County, UTUT43,14130.1−10%

292Nicollet County, MNMN34,27330.1−8%

293St. Charles Parish, LALA50,58630.1−12%

294Bexar County, TXTX2,160,08830.1−6%

295Roosevelt County, MTMT10,24230.1−7%

296Allendale County, SCSC7,35530.1−14%

297Wright County, MNMN157,55930.1−9%

298Ouachita Parish, LALA158,54230.2−7%

299Thurston County, NENE6,75230.2+1%

300Charleston County, SCSC436,20030.2−13%

301Prince George County, VAVA43,93630.2−6%

302Pennington County, SDSD116,79230.2−14%

303Atascosa County, TXTX53,59030.2−7%

304Portage County, OHOH163,40430.2−12%

305Copiah County, MSMS27,49730.2−11%

306Crane County, TXTX4,55430.2−12%

307Cass County, NDND201,79430.2−4%

308Dakota County, MNMN457,71030.2−10%

309Williamson County, TXTX752,82730.2−6%

310Pike County, ALAL33,68830.2−7%

311Charles County, MDMD176,59330.2−13%

312Ford County, KSKS33,99330.2+1%

313Clay County, KYKY19,46530.2−13%

314Cochran County, TXTX2,54630.2−14%

315Richmond County, GAGA206,55930.3−6%

316Livingston Parish, LALA155,03630.3−8%

317Upton County, TXTX3,13130.3−21%

318Hidalgo County, NMNM3,92930.3−13%

319Bristol Bay, AKAK84730.3−16%

320Winona County, MNMN50,52330.3−8%

321Echols County, GAGA3,68530.3+2%

322Minidoka County, IDID22,91130.3−10%

323Haskell County, KSKS3,59930.3−2%

324Coffee County, GAGA44,40730.3−6%

325Issaquena County, MSMS1,26330.3−9%

326Baker County, FLFL29,73730.3−11%

327Tate County, MSMS28,72530.3−11%

328El Paso County, COCO757,04030.3−8%

329Kittitas County, WAWA48,80330.3−3%

330Tangipahoa Parish, LALA141,34630.3−6%

331Ottawa County, MIMI308,45930.3−6%

332Effingham County, GAGA74,39730.4−10%

333Pickens County, SCSC139,19830.4−7%

334Juab County, UTUT13,56730.4+15%

335Leslie County, KYKY9,62730.4−17%

336Harris County, TXTX5,045,02630.4−3%

337Cortland County, NYNY45,85030.4−11%

338Yuma County, AZAZ224,44930.4−10%

339Sweetwater County, WYWY41,26730.4−11%

340McCreary County, KYKY17,12430.4−11%

341Jim Hogg County, TXTX4,55530.4−10%

342Charlton County, GAGA13,12130.4−9%

343Taylor County, TXTX150,07730.4−6%

344Rice County, MNMN69,93930.4−8%

345Mellette County, SDSD2,13730.4−5%

346Ector County, TXTX173,80130.4−5%

347Duval County, TXTX9,40230.5−10%

348Richland County, SCSC434,95630.5−7%

349Marshall County, MSMS34,65430.5−10%

350Chittenden County, VTVT169,11530.5−11%

351Hampshire County, MAMA164,06530.5−11%

352Sumter County, GAGA28,80130.5−6%

353Lea County, NMNM74,74930.5−8%

354Roseau County, MNMN15,24630.5−14%

355Fort Bend County, TXTX975,19130.5−8%

356Gwinnett County, GAGA1,018,09930.5−6%

357Murray County, GAGA41,60730.5−6%

358Stevens County, MNMN9,74730.5−10%

359Erath County, TXTX43,91130.5−3%

360Beaufort County, SCSC204,43330.5−15%

361Hendry County, FLFL48,27630.5+4%

362Oswego County, NYNY118,56930.6−13%

363West Baton Rouge Parish, LALA28,75630.6−10%

364Robeson County, NCNC119,94130.6−4%

365Wilcox County, ALAL9,66630.6−10%

366Acadia Parish, LALA57,03230.6−9%

367Strafford County, NHNH135,04330.6−11%

368Caribou County, IDID7,25230.6−13%

369Weld County, COCO378,42630.6−1%

370Carroll County, GAGA131,03630.6−6%

371Tarrant County, TXTX2,248,46630.6−5%

372Putnam County, OHOH34,38030.6−13%

373San Miguel County, NMNM26,26030.6−13%

374Teton County, IDID13,25430.6−2%

375Nueces County, TXTX352,99230.7−8%

376Eagle County, COCO54,29130.7−2%

377Union County, KYKY12,83930.7−11%

378Jim Wells County, TXTX38,80430.7−6%

379Cameron Parish, LALA4,71830.7−12%

380Bossier Parish, LALA131,86730.7−9%

381Dallas County, TXTX2,661,39730.7−1%

382Stanislaus County, CACA557,71930.7−3%

383Harrison County, MSMS217,13630.7−9%

384Muscogee County, GAGA202,17130.7−6%

385Lamar County, MSMS67,40330.7−6%

386Hampton, VAVA137,31530.7−10%

387Pecos County, TXTX14,56030.7−2%

388San Benito County, CACA70,08230.7−2%

389St. Charles County, MOMO426,49930.7−10%

390St. Lawrence County, NYNY105,48830.7−13%

391Clay County, MSMS18,23830.7−9%

392Jefferson County, MOMO233,13230.7−12%

393Wayne County, UTUT2,58730.7−10%

394Culberson County, TXTX2,26730.7−6%

395Carbon County, UTUT20,68030.7−9%

396Jasper County, SCSC38,53330.7−9%

397Tuscaloosa County, ALAL241,36830.8−4%

398Marquette County, MIMI68,06430.8−18%

399Carver County, MNMN114,37930.8−9%

400Washington County, ARAR271,21330.8−0%

401Dane County, WIWI590,37530.8−7%

402Ward County, TXTX11,12530.8−15%

403Owyhee County, IDID12,66130.8−6%

404Kearny County, KSKS3,88830.8−3%

405Phillips County, ARAR14,25530.8−7%

406East Feliciana Parish, LALA18,91130.8−14%

407Walker County, TXTX83,84230.8−1%

408Lancaster County, NENE334,04930.8−4%

409Sandoval County, NMNM159,56530.8−12%

410Kent County, MIMI675,23230.8−5%

411Jessamine County, KYKY57,14730.8−6%

412Perry County, MSMS11,57730.8−8%

413Los Angeles County, CACA9,694,93430.8−4%

414Parmer County, TXTX9,67830.8−4%

415Summit County, COCO31,51730.9+0%

416Tift County, GAGA42,25430.9−7%

417Adams County, ININ36,65030.9−6%

418George County, MSMS26,33130.9−7%

419Humboldt County, NVNV17,26730.9−8%

420Franklin County, OHOH1,361,53630.9−5%

421San Patricio County, TXTX72,05330.9−3%

422Caldwell County, TXTX55,15030.9−10%

423Suffolk County, MAMA791,89130.9−3%

424Yazoo County, MSMS22,94730.9−8%

425Kane County, ILIL525,75730.9−4%

426Hinds County, MSMS211,88830.9−3%

427Knott County, KYKY13,32130.9−14%

428Adams County, COCO554,66830.9−2%

429Montgomery County, GAGA8,63530.9−8%

430Adams County, WAWA21,48830.9+4%

431Iberville Parish, LALA29,57930.9−10%

432Williamsburg County, SCSC29,66230.9−13%

433Dakota County, NENE21,68730.9−1%

434Ellis County, TXTX240,86730.9−7%

435Collin County, TXTX1,297,17930.9−6%

436Dawes County, NENE7,85831.0+1%

437Solano County, CACA455,37631.0−9%

438San Joaquin County, CACA823,81531.0−3%

439Newton County, GAGA125,58331.0−7%

440Oneida County, IDID5,08531.0−14%

441Bullitt County, KYKY86,45431.0−10%

442Hamilton County, FLFL14,18031.0−12%

443Sterling County, TXTX1,34931.0−18%

444Jefferson Davis County, MSMS10,94131.0−11%

445Tipton County, TNTN62,28731.0−10%

446Kent County, DEDE194,78631.0−10%

447Prince George's County, MDMD970,37431.0−7%

448Lake County, COCO7,55231.0+2%

449Martin County, TXTX5,28431.0−4%

450San Diego County, CACA3,282,24831.0−7%

451Twiggs County, GAGA7,59731.0−12%

452Mitchell County, GAGA20,46731.0−9%

453St. Landry Parish, LALA80,76531.1−10%

454Sioux County, IAIA36,77431.1−5%

455Barrow County, GAGA99,77331.1−4%

456St. Helena Parish, LALA10,75831.1−11%

457Lee County, SCSC15,73031.1−13%

458Sitka, AKAK8,31931.1−12%

459Brooks County, TXTX6,57931.1−10%

460Bronx County, NYNY1,406,33231.1−0%

461Matanuska-Susitna, AKAK118,66631.1−9%

462Brantley County, GAGA18,93631.1−10%

463Washington County, ALAL14,82231.1−11%

464Dallas County, ALAL35,14031.1−12%

465La Crosse County, WIWI121,33931.1−7%

466Midland County, TXTX187,85531.1−9%

467Kalamazoo County, MIMI263,79531.1−5%

468Spotsylvania County, VAVA155,38831.1−9%

469Brazoria County, TXTX419,08031.1−8%

470Greene County, MSMS13,70731.1−4%

471St. Francis County, ARAR21,80031.1−8%

472Houston County, GAGA178,21431.1−8%

473Macon County, GAGA11,75631.1−11%

474Douglas County, GAGA154,29331.1−8%

475Mingo County, WVWV21,45531.2−16%

476Hancock County, GAGA8,68231.2−13%

477Bear Lake County, IDID6,72731.2−13%

478Covington County, MSMS17,89831.2−8%

479Ellis County, KSKS29,07531.2−5%

480Wayne County, MSMS19,80731.2−8%

481Wilkinson County, GAGA8,65031.2−13%

482Orangeburg County, SCSC83,17731.2−12%

483Cherokee County, GAGA299,27331.2−8%

484Powell County, KYKY12,81231.2−10%

485Will County, ILIL712,25331.2−6%

486McLennan County, TXTX272,02031.2−2%

487Evangeline Parish, LALA31,98031.2−7%

488Benson County, NDND5,75931.2−1%

489Somervell County, TXTX10,26131.2−15%

490Walthall County, MSMS13,92831.2−11%

491Clermont County, OHOH216,97731.2−10%

492Larimer County, COCO377,29231.2−6%

493Allegany County, NYNY46,80031.3−11%

494Kenai Peninsula, AKAK61,95131.3−14%

495Stanton County, NENE5,74431.3−13%

496Stone County, MSMS19,65431.3−7%

497Dillon County, SCSC27,45831.3−9%

498Lanier County, GAGA10,62331.3−6%

499Columbia County, GAGA169,18931.3−12%

500Stanton County, KSKS1,98631.3−7%

SHOWING 1–500 OF 3,122

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Download CSV (full list, 3,122 rows)

UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES

Frequently asked

Which county has the lowest median age?

Madison County, Idaho ranks #1 with 20.0 (1990 American Community Survey).

What are the top 5 counties by median age?

Madison County, Idaho, Todd County, South Dakota, Radford, Virginia, Buffalo County, South Dakota, Utah County, Utah.

How many counties are in this ranking?

3,122 counties qualify after filtering for population minimums and data availability. The ranking covers 1990 ACS 5-year data.

How is median age measured?

Median age of all residents. Source: US Census Bureau, American Community Survey 5-year estimates (1990).