RANKING · 2000 CENSUS · 500 SHOWN OF 3,125

Youngest by median age, US counties · 2000

US counties with the youngest median age (2000 ACS). Madison County, Idaho leads at 20.7. 3,125 counties qualify in total. South Dakota carries 4 of the top 25 entries.

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SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2000 2010 2020 2024

RANKPLACESTATEPOPMEDIAN AGEVS 1990

USUnited States281,421,90635.2–

01Madison County, IDID55,17220.7+4%

02Todd County, SDSD8,86321.7+5%

03Harrisonburg, VAVA50,83922.6−6%

04Williamsburg, VAVA15,86122.6−2%

05Radford, VAVA17,24322.8+4%

06Chattahoochee County, GAGA8,46523.2+3%

07Utah County, UTUT759,85923.3+4%

08Lexington, VAVA7,76923.3−1%

09Buffalo County, SDSD1,80223.4+5%

10Brazos County, TXTX249,08823.6−2%

11Ziebach County, SDSD2,38923.8−4%

12Northwest Arctic, AKAK7,09523.9+4%

13Sioux County, NDND3,66723.9+4%

14Riley County, KSKS72,59823.9+0%

15Cache County, UTUT145,00023.9+1%

16Iron County, UTUT67,14124.2−1%

17Whitman County, WAWA48,51224.7+1%

18Oktibbeha County, MSMS51,89624.8+0%

19Clay County, SDSD15,03124.9+4%

20Onslow County, NCNC217,17525.0+2%

21Liberty County, GAGA70,31325.0+4%

22Isabella County, MIMI64,69125.1+3%

23Bethel Census Area, AKAK18,39125.3+1%

24Sanpete County, UTUT31,45325.3+4%

25Clarke County, GAGA129,92125.4−1%

26San Juan County, UTUT14,54225.5+6%

27Claiborne County, MSMS8,05825.6+8%

28Charlottesville, VAVA44,38825.6−12%

29Athens County, OHOH63,19725.7+1%

30Montgomery County, VAVA98,43425.9+1%

31Starr County, TXTX66,31926.1+9%

32Bulloch County, GAGA86,94926.1−1%

33Lincoln Parish, LALA48,36026.5+7%

34Dewey County, SDSD5,41926.5+2%

35Juab County, UTUT13,56726.5−13%

36Long County, GAGA21,55726.5−2%

37Story County, IAIA101,29126.5+2%

38Webb County, TXTX281,22426.5+3%

39Brookings County, SDSD37,63526.6+1%

40Douglas County, KSKS120,92026.6+3%

41Albany County, WYWY38,55826.7+0%

42Davis County, UTUT381,22726.8+8%

43Lafayette County, MSMS59,59726.9+4%

44McKinley County, NMNM68,11926.9+5%

45North Slope, AKAK10,58227.0+2%

46Apache County, AZAZ64,44527.0+14%

47Tooele County, UTUT87,46127.1−3%

48Hidalgo County, TXTX921,54927.2+3%

49Tippecanoe County, ININ190,45627.2+2%

50Lee County, ALAL189,88127.5+4%

51Jackson County, ILIL52,50127.5+4%

52Nome Census Area, AKAK9,83027.6+5%

53Payne County, OKOK83,88927.6+2%

54Monroe County, ININ143,34527.6+4%

55Franklin County, IDID15,88927.7−0%

56Menominee County, WIWI4,19927.7+13%

57Coryell County, TXTX85,59227.8+9%

58Maverick County, TXTX58,82327.8+8%

59Adair County, MOMO25,68427.9+2%

60Latah County, IDID41,84227.9+2%

61Christian County, KYKY70,11527.9+1%

62Wayne County, NENE10,02027.9−2%

63Holmes County, OHOH44,97028.0+1%

64Franklin County, WAWA102,61228.0−3%

65Box Elder County, UTUT65,32028.0+4%

66Finney County, KSKS37,50528.1+3%

67Camden County, GAGA60,14328.2+3%

68Vernon Parish, LALA45,09128.3+14%

69Corson County, SDSD3,78128.3−1%

70Duchesne County, UTUT20,85628.3+13%

71Johnson County, IAIA160,04428.4+4%

72Hays County, TXTX304,39028.4+6%

73DeKalb County, ILIL101,83528.4+4%

74Johnson County, MOMO56,67028.5+9%

75Pulaski County, MOMO54,44228.5+6%

76Morgan County, UTUT13,38328.5+8%

77Champaign County, ILIL209,97228.6+3%

78Tompkins County, NYNY104,04728.6+5%

79Centre County, PAPA157,39328.7+6%

80Jefferson County, IDID35,29728.8+9%

81Dillingham Census Area, AKAK4,48328.9+7%

82Rolette County, NDND11,68828.9+9%

83Salt Lake County, UTUT1,220,91628.9+4%

84Merced County, CACA297,26029.0+3%

85Cameron County, TXTX433,94629.0+5%

86Zavala County, TXTX9,03729.0+8%

87Uintah County, UTUT38,27829.0+12%

88Alachua County, FLFL290,02829.0+2%

89McDonough County, ILIL25,91629.0+6%

90Seward County, KSKS21,07329.0−0%

91Elmore County, IDID29,46529.1+4%

92Geary County, KSKS36,33829.1+10%

93Lake and Peninsula, AKAK1,35729.2+7%

94Grand Forks County, NDND74,50129.2+6%

95Bennett County, SDSD3,30729.2−2%

96Bell County, TXTX402,24829.2+4%

97Kleberg County, TXTX30,31529.2+5%

98Tulare County, CACA485,14629.2−1%

99Weber County, UTUT278,17429.3+1%

100Fairbanks North Star, AKAK93,97229.5+7%

101Boone County, MOMO191,74629.5+6%

102Wasatch County, UTUT38,51429.5+6%

103Yolo County, CACA224,41029.5+2%

104Hendry County, FLFL48,27629.5−3%

105Leon County, FLFL299,04829.5+2%

106LaGrange County, ININ41,30529.5+5%

107Roosevelt County, NMNM18,61529.5−1%

108Coconino County, AZAZ144,36829.6+12%

109Cumberland County, NCNC338,47329.6+9%

110Norfolk, VAVA231,01329.6+8%

111Adams County, WAWA21,48829.6−4%

112Forrest County, MSMS79,03429.7+2%

113Holmes County, MSMS15,46529.7+7%

114Nacogdoches County, TXTX66,03529.7+7%

115Echols County, GAGA3,68529.7−2%

116Bingham County, IDID51,15329.7+6%

117Gaines County, TXTX23,95629.7+6%

118Madison Parish, LALA8,84429.8−0%

119Bolivar County, MSMS28,26229.8+13%

120Big Horn County, MTMT12,75229.8+6%

121Thurston County, NENE6,75229.8−1%

122Rowan County, KYKY24,47629.8+14%

123Bannock County, IDID91,59129.8+0%

124Willacy County, TXTX19,97129.8+8%

125Fresno County, CACA1,035,45629.9+1%

126Blue Earth County, MNMN70,63429.9+8%

127Watauga County, NCNC54,78629.9+7%

128Millard County, UTUT14,05729.9+15%

129Ford County, KSKS33,99329.9−1%

130Buffalo County, NENE51,17230.0+4%

131Hoke County, NCNC56,93930.0+1%

132Montgomery County, TNTN249,93530.0+5%

133El Paso County, TXTX877,85830.0+7%

134Leflore County, MSMS25,68630.1+3%

135Comanche County, OKOK122,15830.1+6%

136Waller County, TXTX69,85830.1+7%

137Emery County, UTUT10,17730.1+19%

138Navajo County, AZAZ109,94630.2+13%

139Kings County, CACA154,32730.2+6%

140Natchitoches Parish, LALA36,08930.2+4%

141Sunflower County, MSMS22,89330.2+4%

142Nodaway County, MOMO20,17430.2+8%

143Doña Ana County, NMNM229,09130.2+7%

144Hudspeth County, TXTX3,43330.2+3%

145Clayton County, GAGA297,47130.2+1%

146Lowndes County, GAGA122,86730.2+5%

147Fredericksburg, VAVA30,39330.3+5%

148San Bernardino County, CACA2,224,09130.3+3%

149Sevier County, UTUT22,82730.3+4%

150Manassas Park, VAVA16,56030.3+10%

151Travis County, TXTX1,389,67030.4+3%

152Ingham County, MIMI289,70930.4+7%

153Orange County, NCNC152,49830.4+5%

154Pitt County, NCNC182,93630.4+3%

155Texas County, OKOK20,32230.4−9%

156Moore County, TXTX21,89130.4+4%

157Monongalia County, WVWV107,99130.4+5%

158Gunnison County, COCO17,43930.4+7%

159Lake County, COCO7,55230.5−2%

160Coahoma County, MSMS19,84930.5+4%

161Humphreys County, MSMS7,00130.5+9%

162Lubbock County, TXTX328,90630.5+6%

163Canyon County, IDID275,12330.5−3%

164McLean County, ILIL171,41930.5+5%

165Kern County, CACA927,06830.6+3%

166Tunica County, MSMS8,81930.6+21%

167Glacier County, MTMT13,46330.6+6%

168Dawes County, NENE7,85830.6−1%

169Jackson County, SDSD2,66630.6+3%

170Deaf Smith County, TXTX18,62630.6+7%

171Dunn County, WIWI46,22330.6+7%

172Alamosa County, COCO16,68830.6+8%

173Gallatin County, MTMT128,74030.7+3%

174Zapata County, TXTX13,75330.7+6%

175Atkinson County, GAGA8,45430.7−2%

176Clark County, IDID78330.7−6%

177Madison County, KYKY101,69630.7+6%

178Frio County, TXTX18,82330.7+9%

179Washington County, ARAR271,21330.8+0%

180Sharkey County, MSMS3,09730.8+16%

181Curry County, NMNM46,65530.8+5%

182Coles County, ILIL46,60730.8+3%

183Summit County, COCO31,51730.8−0%

184Haskell County, KSKS3,59930.8+2%

185Val Verde County, TXTX47,83530.8+9%

186Beaver County, UTUT7,30130.8−4%

187Graham County, AZAZ40,15730.9+3%

188East Carroll Parish, LALA6,76030.9+10%

189Weld County, COCO378,42630.9+1%

190Lyon County, KSKS32,26630.9+5%

191Faulkner County, ARAR133,97931.0+4%

192Imperial County, CACA181,41131.0+8%

193San Juan County, NMNM120,34031.0+9%

194Denton County, TXTX1,069,34631.0+7%

195Washington County, UTUT213,67031.0+10%

196Walker County, TXTX83,84231.0+1%

197Yukon-Koyukuk Census Area, AKAK5,02831.1+5%

198Benton County, OROR97,72831.1+5%

199Dallas County, TXTX2,661,39731.1+1%

200Cassia County, IDID26,39731.1+7%

201Grant County, WAWA105,72731.1−3%

202Harris County, TXTX5,045,02631.2+3%

203Yakima County, WAWA259,18531.2−1%

204Elko County, NVNV54,81531.2+7%

205Bronx County, NYNY1,406,33231.2+0%

206Pecos County, TXTX14,56031.2+2%

207Rutherford County, TNTN386,35231.2+5%

208Eagle County, COCO54,29131.2+2%

209Paulding County, GAGA190,99631.2+5%

210Cass County, NDND201,79431.3+4%

211Washtenaw County, MIMI370,21431.3+7%

212Teton County, IDID13,25431.3+2%

213Manassas, VAVA44,33231.3+8%

214San Benito County, CACA70,08231.4+2%

215Dakota County, NENE21,68731.4+1%

216Benson County, NDND5,75931.4+1%

217Dallam County, TXTX7,50831.4−5%

218Erath County, TXTX43,91131.4+3%

219Hale County, TXTX31,81931.4+4%

220Uinta County, WYWY20,72831.4+17%

221Sherburne County, MNMN104,19431.4+8%

222Yuba County, CACA88,69131.4+6%

223Adams County, COCO554,66831.4+2%

224Grant County, KSKS7,02831.4+4%

225Kittitas County, WAWA48,80331.4+4%

226Colusa County, CACA21,83631.5−2%

227East Baton Rouge Parish, LALA456,18031.5+5%

228Beltrami County, MNMN47,05531.5+8%

229Washington County, MSMS40,44631.5+9%

230Sarpy County, NENE208,30331.5+10%

231Prince Edward County, VAVA22,39131.5+10%

232Kodiak Island, AKAK12,38731.6+9%

233Stearns County, MNMN164,11031.6+13%

234Dimmit County, TXTX8,02431.6+13%

235Power County, IDID8,24631.6+5%

236Kearny County, KSKS3,88831.6+3%

237Monterey County, CACA433,72931.7+6%

238Suffolk County, MAMA791,89131.7+3%

239Stanislaus County, CACA557,71931.7+3%

240Santa Cruz County, AZAZ50,02031.8+9%

241Clark County, ARAR20,93831.8−3%

242Bee County, TXTX32,51531.8+7%

243Quitman County, MSMS5,36431.8+6%

244Titus County, TXTX31,56331.8−3%

245Peach County, GAGA29,87731.8+6%

246Bonneville County, IDID135,77131.8+10%

247Tuscaloosa County, ALAL241,36831.9+4%

248San Joaquin County, CACA823,81531.9+3%

249Mecosta County, MIMI42,32031.9+24%

250Benton County, MNMN41,74431.9+9%

251Hinds County, MSMS211,88831.9+3%

252McLennan County, TXTX272,02031.9+2%

253Prince William County, VAVA502,96631.9+10%

254Fremont County, IDID14,20831.9+13%

255Macon County, ALAL18,13232.0+8%

256Crittenden County, ARAR46,21032.0+7%

257Los Angeles County, CACA9,694,93432.0+4%

258Ascension Parish, LALA135,10532.0+8%

259Lancaster County, NENE334,04932.0+4%

260Robeson County, NCNC119,94132.0+5%

261Berkeley County, SCSC274,66632.0+13%

262Ector County, TXTX173,80132.0+5%

263St. John the Baptist Parish, LALA39,87532.0+11%

264San Patricio County, TXTX72,05332.0+4%

265Newport News, VAVA183,23032.0+8%

266Sumter County, ALAL11,58832.1+11%

267Mellette County, SDSD2,13732.1+5%

268Bexar County, TXTX2,160,08832.1+7%

269Parmer County, TXTX9,67832.1+4%

270Potter County, TXTX114,45332.1+2%

271Reeves County, TXTX12,13832.1+10%

272Prince George County, VAVA43,93632.1+6%

273Pierce County, WIWI43,51932.1+9%

274Coffee County, GAGA44,40732.1+6%

275Kane County, ILIL525,75732.2+4%

276Taylor County, TXTX150,07732.2+6%

277Campbell County, WYWY48,14532.2+10%

278Cleveland County, OKOK303,97332.2+8%

279Dougherty County, GAGA82,61632.2+8%

280Hall County, GAGA226,56832.2−0%

281Meade County, KYKY30,69932.2+15%

282Durham County, NCNC347,24032.2+1%

283Uvalde County, TXTX24,96332.2+7%

284Richmond County, GAGA206,55932.3+7%

285Warren County, KYKY149,37532.3+3%

286Ouachita Parish, LALA158,54232.3+7%

287Tangipahoa Parish, LALA141,34632.3+7%

288Ottawa County, MIMI308,45932.3+6%

289Clay County, MNMN67,73432.3+12%

290Noxubee County, MSMS9,79832.3+12%

291Roosevelt County, MTMT10,24232.3+7%

292Cherokee County, OKOK49,19632.3+1%

293Atascosa County, TXTX53,59032.3+7%

294Tarrant County, TXTX2,248,46632.3+6%

295Castro County, TXTX7,29532.3+9%

296Williamson County, TXTX752,82732.3+7%

297DeKalb County, GAGA774,39432.3+1%

298Anchorage, AKAK287,15532.4+8%

299Lafayette Parish, LALA257,94932.4+8%

300Greene County, MSMS13,70732.4+4%

301Jefferson County, MSMS6,82532.4+14%

302Socorro County, NMNM15,83832.4+8%

303Ward County, NDND68,23332.4+11%

304Reagan County, TXTX3,16632.4+22%

305Eau Claire County, WIWI109,03332.4+8%

306Scott County, KYKY62,26232.4+2%

307Prowers County, COCO11,88432.4+1%

308Pike County, ALAL33,68832.5+8%

309Kent County, MIMI675,23232.5+5%

310Jefferson County, NYNY111,54032.5+11%

311Martin County, TXTX5,28432.5+5%

312Franklin County, OHOH1,361,53632.5+5%

313Barrow County, GAGA99,77332.5+5%

314Carroll County, GAGA131,03632.5+6%

315Gwinnett County, GAGA1,018,09932.5+7%

316Lumpkin County, GAGA36,17832.5+8%

317Wyandotte County, KSKS170,59732.5+2%

318Harnett County, NCNC150,13732.5+3%

319Wood County, OHOH134,17632.6+11%

320Nicollet County, MNMN34,27332.6+8%

321Lamar County, MSMS67,40332.6+6%

322Richland County, SCSC434,95632.6+7%

323Lee County, GAGA34,17932.6+10%

324Murray County, GAGA41,60732.6+7%

325Muscogee County, GAGA202,17132.6+6%

326Sumter County, GAGA28,80132.6+7%

327Madera County, CACA167,92732.7+2%

328Kalamazoo County, MIMI263,79532.7+5%

329Lowndes County, MSMS57,34632.7+11%

330Custer County, OKOK28,17532.7+9%

331Pickens County, SCSC139,19832.7+8%

332Grant County, KYKY26,18132.7+2%

333Scott County, MNMN159,01732.7+9%

334Virginia Beach, VAVA453,73732.7+13%

335Hardee County, FLFL25,93232.7+1%

336Fulton County, GAGA1,098,79132.7+2%

337Ellis County, KSKS29,07532.7+5%

338Winona County, MNMN50,52332.8+8%

339Culberson County, TXTX2,26732.8+7%

340Jim Wells County, TXTX38,80432.8+7%

341Presidio County, TXTX5,43332.8+3%

342Livingston Parish, LALA155,03632.8+8%

343Ada County, IDID546,14132.8+3%

344Sioux County, IAIA36,77432.8+6%

345Wake County, NCNC1,257,23532.9+4%

346Shelby County, TNTN910,22632.9+5%

347Ionia County, MIMI66,55732.9+10%

348Rice County, MNMN69,93932.9+8%

349Oldham County, TXTX1,78332.9+15%

350Jerome County, IDID26,36232.9+1%

351Owyhee County, IDID12,66132.9+7%

352Adams County, ININ36,65032.9+7%

353Jessamine County, KYKY57,14732.9+7%

354Collin County, TXTX1,297,17932.9+6%

355Maricopa County, AZAZ4,689,55833.0+3%

356Phillips County, ARAR14,25533.0+7%

357Terrebonne Parish, LALA104,16333.0+13%

358Panola County, MSMS32,69133.0+10%

359Jackson County, OKOK24,76433.0+11%

360Washington County, OROR611,70833.0+1%

361La Salle County, TXTX6,51733.0−5%

362Portage County, WIWI71,94333.0+12%

363Craighead County, ARAR116,95733.0+4%

364El Paso County, COCO757,04033.0+9%

365Burke County, GAGA24,40833.0+10%

366Tift County, GAGA42,25433.0+7%

367Whitfield County, GAGA106,21233.0+2%

368Elkhart County, ININ208,77433.0+3%

369Gray County, KSKS5,65233.0+2%

370Fayette County, KYKY329,75133.0+5%

371Kings County, NYNY2,653,96333.1+2%

372Mississippi County, ARAR37,82833.1+12%

373Riverside County, CACA2,544,91633.1+5%

374Orleans Parish, LALA362,15433.1+4%

375Wright County, MNMN157,55933.1+10%

376Issaquena County, MSMS1,26333.1+9%

377Cibola County, NMNM26,80733.1+10%

378Lea County, NMNM74,74933.1+9%

379Stafford County, VAVA170,80333.1+10%

380Mecklenburg County, NCNC1,233,38333.1+3%

381Denver County, COCO740,61333.1−3%

382San Diego County, CACA3,282,24833.2+7%

383Missoula County, MTMT123,51333.2+5%

384Adair County, OKOK19,82833.2+4%

385Ellis County, TXTX240,86733.2+7%

386Dane County, WIWI590,37533.2+8%

387Cobb County, GAGA793,34533.2+4%

388Larimer County, COCO377,29233.2+6%

389Wichita County, TXTX129,55533.2+5%

390Perry County, ALAL7,42533.3+11%

391Orange County, CACA3,149,50733.3+6%

392Iberia Parish, LALA66,84633.3+12%

393George County, MSMS26,33133.3+8%

394Tallahatchie County, MSMS10,87733.3+13%

395Hardin County, OHOH30,07233.3+5%

396Morrow County, OROR12,60233.3−1%

397Hockley County, TXTX21,60033.3+13%

398Nueces County, TXTX352,99233.3+9%

399Fort Bend County, TXTX975,19133.3+9%

400Orange County, FLFL1,528,00233.3+5%

401Bryan County, GAGA52,06233.3+12%

402Lanier County, GAGA10,62333.3+6%

403Newton County, GAGA125,58333.3+8%

404Turner County, GAGA8,98333.3+5%

405Will County, ILIL712,25333.3+7%

406Noble County, ININ47,93733.3+5%

407Prince George's County, MDMD970,37433.3+7%

408Summit County, UTUT43,14133.3+11%

409Boone County, KYKY145,31633.4+6%

410St. Martin Parish, LALA51,10633.4+14%

411Madison County, MSMS116,29833.4+13%

412Sumter County, SCSC105,06733.4+13%

413Meade County, SDSD30,71133.4+11%

414Madison County, TXTX14,22633.4+12%

415Santa Barbara County, CACA442,06533.4+5%

416Boulder County, COCO328,56033.4+6%

417Charlton County, GAGA13,12133.4+10%

418Henry County, GAGA264,92233.4+5%

419Humboldt County, NVNV17,26733.4+8%

420Montgomery County, ALAL225,89133.5+5%

421Perry County, MSMS11,57733.5+9%

422Glasscock County, TXTX1,12833.5+19%

423La Crosse County, WIWI121,33933.5+8%

424Minnehaha County, SDSD212,69133.5+6%

425Morgan County, COCO30,30633.5+3%

426Minidoka County, IDID22,91133.5+11%

427Hardin County, KYKY113,48233.5+20%

428Cook County, ILIL5,194,62533.6+3%

429Greenlee County, AZAZ9,31233.6+6%

430Sevier County, ARAR15,75833.6−4%

431Stone County, MSMS19,65433.6+7%

432Douglas County, NENE606,46033.6+5%

433Loudoun County, VAVA449,74933.6+6%

434Hudson County, NJNJ735,03333.6+1%

435Marion County, ININ992,19633.6+5%

436Coweta County, GAGA160,24033.6+5%

437Effingham County, GAGA74,39733.6+11%

438Montgomery County, GAGA8,63533.6+9%

439Sedgwick County, KSKS538,43333.6+5%

440Stevens County, KSKS4,98433.6+2%

441Carbon County, UTUT20,68033.6+9%

442Southeast Fairbanks Census Area, AKAK7,27033.7+17%

443Glenn County, CACA28,14133.7+4%

444Acadia Parish, LALA57,03233.7+10%

445Evangeline Parish, LALA31,98033.7+8%

446Plaquemines Parish, LALA22,25633.7+15%

447Anoka County, MNMN381,60533.7+12%

448Dakota County, MNMN457,71033.7+12%

449Ramsey County, MNMN541,62333.7+5%

450DeSoto County, MSMS197,91833.7+7%

451Yazoo County, MSMS22,94733.7+9%

452St. Louis, MOMO278,14433.7+3%

453Marion County, OROR355,77733.7−0%

454Ochiltree County, TXTX9,28433.7+6%

455Douglas County, COCO399,39633.7+4%

456Bartow County, GAGA120,80033.7+7%

457Colquitt County, GAGA47,43833.7+3%

458Milwaukee County, WIWI924,21633.7+4%

459Wilcox County, ALAL9,66633.8+11%

460St. Francis County, ARAR21,80033.8+9%

461Duval County, TXTX9,40233.8+11%

462Sacramento County, CACA1,618,46033.8+6%

463Crawford County, KSKS39,00833.8−2%

464Bossier Parish, LALA131,86733.8+10%

465Covington County, MSMS17,89833.8+8%

466Scott County, MSMS28,07333.8+7%

467Wayne County, MSMS19,80733.8+8%

468Otero County, NMNM70,36833.8+16%

469Jasper County, SCSC38,53333.8+10%

470Tom Green County, TXTX120,60233.8+8%

471Garfield County, UTUT5,25633.8+7%

472Valencia County, NMNM82,01333.8+7%

473Douglas County, GAGA154,29333.8+9%

474Lake County, ILIL719,33933.8+7%

475Delaware County, ININ113,10633.8+7%

476Stanton County, KSKS1,98633.8+8%

477Lowndes County, ALAL9,35933.9+20%

478Yuma County, AZAZ224,44933.9+12%

479Stevens County, MNMN9,74733.9+11%

480Clay County, MSMS18,23833.9+10%

481Harrison County, MSMS217,13633.9+10%

482Marshall County, MSMS34,65433.9+11%

483Jim Hogg County, TXTX4,55533.9+11%

484Carver County, MNMN114,37933.9+10%

485Richmond, VAVA237,25733.9+2%

486Walton County, GAGA112,69633.9+7%

487Solano County, CACA455,37633.9+9%

488Tattnall County, GAGA24,37633.9+2%

489Treutlen County, GAGA6,46633.9+2%

490Wayne County, MIMI1,769,03834.0+5%

491Drew County, ARAR17,05434.0+7%

492Santa Clara County, CACA1,914,39134.0+6%

493Houghton County, MIMI37,84234.0+7%

494Lyon County, MNMN25,68434.0+8%

495Copiah County, MSMS27,49734.0+13%

496Union County, NCNC267,67434.0+6%

497Malheur County, OROR32,26134.0+0%

498Lincoln County, SDSD77,14534.0+2%

499Brazoria County, TXTX419,08034.0+9%

500Liberty County, TXTX121,36434.0+4%

SHOWING 1–500 OF 3,125

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Download CSV (full list, 3,125 rows)

UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS

Frequently asked

Which county has the lowest median age?

Madison County, Idaho ranks #1 with 20.7 (2000 Decennial Census).

What are the top 5 counties by median age?

Madison County, Idaho, Todd County, South Dakota, Harrisonburg, Virginia, Williamsburg, Virginia, Radford, Virginia.

How many counties are in this ranking?

3,125 counties qualify after filtering for population minimums and data availability. The ranking covers 2000 Decennial Census data.

How is median age measured?

Median age of all residents. Source: US Census Bureau, 2000 Decennial Census.