RANKING · 1990 CENSUS · 500 SHOWN OF 3,122

Least racially diverse, US counties · 1990

US counties with the lowest CensusEasy Diversity Score, where most residents share the same race or ethnicity (1990 ACS). Slope County, North Dakota leads at 0. 3,122 counties qualify in total. North Dakota carries 5 of the top 25 entries. The median across all 3,122 is 17.

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SAME RANKING BYCities States Metros ZIP codes

YEAR1990 2024

RANKPLACESTATEPOPDIVERSITY SCOREVS –

USUnited States248,709,87347–

01Slope County, NDND6280–

02Worth County, MOMO1,9140–

03Pierce County, NDND3,8380–

04Sequatchie County, TNTN17,8610–

05Rock County, NENE1,2590–

06Mercer County, MOMO3,4040–

07McPherson County, SDSD2,3470–

08Wolfe County, KYKY6,2980–

09Blaine County, NENE4580–

10Hayes County, NENE8210–

11Clinton County, KYKY9,1390–

12Faulk County, SDSD2,1780–

13Magoffin County, KYKY11,1100–

14Steele County, NDND1,7971–

15Divide County, NDND2,1101–

16Logan County, NDND1,8591–

17Grant County, KYKY26,1811–

18Ritchie County, WVWV8,0341–

19Schuyler County, ILIL6,6571–

20Webster County, WVWV7,7601–

21Jerauld County, SDSD1,6541–

22Owsley County, KYKY3,9321–

23Montgomery County, IAIA10,0021–

24Highland County, VAVA2,3181–

25Sullivan County, MOMO5,7381–

26Edmunds County, SDSD4,0221–

27Chickasaw County, IAIA11,6631–

28Fentress County, TNTN20,3221–

29Garfield County, NENE1,7101–

30Robertson County, KYKY2,3251–

31Murray County, MNMN7,9421–

32Hanson County, SDSD3,4561–

33Cumberland County, ILIL10,2081–

34Gosper County, NENE1,8031–

35Shelby County, ILIL20,5761–

36Republic County, KSKS4,6401–

37Holmes County, OHOH44,9701–

38Van Buren County, IAIA7,1311–

39Sargent County, NDND3,7111–

40Scott County, ILIL4,8661–

41Cedar County, NENE8,3731–

42Allamakee County, IAIA14,2381–

43Daviess County, ININ34,2091–

44Martin County, ININ9,8561–

45Estill County, KYKY13,9621–

46Noble County, OHOH14,2761–

47Fannin County, GAGA26,1111–

48Roane County, WVWV13,3171–

49Iowa County, WIWI23,9511–

50Butler County, IAIA14,0491–

51Boyd County, NENE1,6741–

52Kingsbury County, SDSD5,2841–

53Emmons County, NDND3,2151–

54Greeley County, NENE2,1541–

55Breathitt County, KYKY12,5581–

56Calhoun County, WVWV5,9781–

57Pope County, MNMN11,4201–

58Turner County, SDSD9,3141–

59Wheeler County, NENE7891–

60Audubon County, IAIA5,5091–

61Knox County, MOMO3,7281–

62Martin County, KYKY10,6971–

63Carter County, KYKY26,1491–

64Jefferson County, PAPA43,2551–

65Iron County, WIWI6,1271–

66Wells County, NDND3,7291–

67LaMoure County, NDND4,1351–

68Tyler County, WVWV7,8811–

69Billings County, NDND1,0711–

70Wayne County, IAIA6,7381–

71Van Buren County, TNTN6,8741–

72Scotland County, MOMO4,7961–

73Piatt County, ILIL16,7911–

74Polk County, NENE5,2701–

75Plymouth County, IAIA25,6971–

76Carroll County, IAIA20,3031–

77Jackson County, KYKY13,3251–

78Bowman County, NDND2,7621–

79McHenry County, NDND5,1301–

80Carroll County, ININ20,6551–

81Iowa County, IAIA16,5041–

82Howard County, IAIA9,4151–

83Douglas County, SDSD2,8881–

84Humboldt County, IAIA9,4091–

85Holt County, NENE10,0671–

86Keya Paha County, NENE7921–

87Pleasants County, WVWV7,3381–

88Sanborn County, SDSD2,3881–

89Wetzel County, WVWV13,7341–

90Jackson County, IAIA19,2881–

91Valley County, NENE4,0941–

92Lafayette County, WIWI17,4781–

93Pickett County, TNTN5,2191–

94Clay County, WVWV7,5381–

95Cuming County, NENE8,8231–

96Clark County, MOMO6,4751–

97Jewell County, KSKS2,8301–

98Nuckolls County, NENE4,1001–

99Lyon County, IAIA12,3541–

100Leslie County, KYKY9,6271–

101Hettinger County, NDND2,4921–

102Moultrie County, ILIL14,3711–

103Shannon County, MOMO7,2851–

104Guthrie County, IAIA10,7821–

105Deuel County, SDSD4,4081–

106Vinton County, OHOH12,6451–

107Grundy County, IAIA12,3611–

108Lincoln County, MNMN5,5831–

109McPherson County, NENE3691–

110Harlan County, NENE3,0001–

111Palo Alto County, IAIA8,8991–

112Boone County, NENE5,3551–

113Taylor County, WIWI20,1181–

114Clay County, ARAR14,0521–

115Cass County, ILIL12,4631–

116Kossuth County, IAIA14,3221–

117Clayton County, IAIA16,8451–

118Adams County, OHOH27,8651–

119Menard County, ILIL11,8631–

120Lee County, KYKY7,2971–

121Calhoun County, ILIL4,3001–

122Pike County, ININ12,0031–

123Loup County, NENE5701–

124Pike County, ILIL14,2311–

125Clay County, KSKS7,9901–

126Nelson County, NDND2,9631–

127Grant County, MNMN6,0851–

128Trego County, KSKS2,7401–

129Wayne County, WVWV37,3091–

130Rooks County, KSKS4,6461–

131Sheridan County, NDND1,2962–

132Adams County, IAIA3,6172–

133Daniels County, MTMT1,6122–

134Switzerland County, ININ10,0372–

135Tucker County, WVWV6,5402–

136Trempealeau County, WIWI31,1712–

137Hamilton County, ILIL7,8592–

138Washington County, ININ28,3832–

139Potter County, SDSD2,3772–

140Mason County, WVWV24,7072–

141Hutchinson County, SDSD7,4132–

142Garfield County, MTMT1,1482–

143Overton County, TNTN23,7872–

144Putnam County, MOMO4,5462–

145McCook County, SDSD5,9642–

146Elliott County, KYKY7,2652–

147Marshall County, KYKY31,6592–

148Effingham County, ILIL34,5192–

149Miner County, SDSD2,2812–

150Fillmore County, NENE5,4582–

151Buffalo County, WIWI13,3182–

152Dundy County, NENE1,5682–

153Clark County, SDSD4,0312–

154Johnson County, TNTN18,7182–

155Lac qui Parle County, MNMN6,7042–

156Campbell County, SDSD1,3772–

157Smith County, KSKS3,5662–

158McIntosh County, NDND2,4512–

159Wirt County, WVWV4,8792–

160Ripley County, ININ29,4342–

161Knott County, KYKY13,3212–

162Adair County, IAIA7,4032–

163Gilmer County, WVWV7,0852–

164Gasconade County, MOMO14,7842–

165Jones County, SDSD9132–

166Lawrence County, KYKY15,7652–

167Logan County, NENE6692–

168Rockcastle County, KYKY16,1482–

169Richland County, ILIL15,2192–

170Somerset County, PAPA72,0042–

171Washington County, KSKS5,5332–

172Unicoi County, TNTN17,8562–

173Griggs County, NDND2,2392–

174Letcher County, KYKY19,9522–

175Clearfield County, PAPA78,1002–

176Hancock County, ILIL16,8032–

177Nemaha County, KSKS10,0542–

178Sherman County, NENE2,9242–

179Mitchell County, NCNC15,0622–

180Richland County, WIWI17,0362–

181Caldwell County, MOMO9,0122–

182Ida County, IAIA6,7772–

183Keokuk County, IAIA9,7972–

184Emmet County, IAIA9,1072–

185Union County, GAGA27,8592–

186Dickinson County, IAIA18,0772–

187Gove County, KSKS2,6312–

188Gentry County, MOMO6,3842–

189Greene County, ARAR47,4112–

190Scott County, TNTN22,6712–

191Reynolds County, MOMO5,9922–

192Dickenson County, VAVA13,2362–

193Decatur County, KSKS2,7162–

194Davis County, IAIA9,2302–

195Sac County, IAIA9,5252–

196Juniata County, PAPA23,4032–

197Sheridan County, KSKS2,4272–

198Adams County, NDND2,2752–

199Towns County, GAGA13,2852–

200Benton County, IAIA26,0042–

201Mills County, IAIA14,7932–

202Mifflin County, PAPA46,1272–

203Grundy County, TNTN14,1162–

204Madison County, IAIA17,2702–

205Nicholas County, WVWV23,8482–

206Dixon County, NENE5,6022–

207Mason County, ILIL12,4112–

208Fountain County, ININ17,0132–

209Harrison County, IAIA14,6232–

210Hooker County, NENE6862–

211Pocahontas County, IAIA6,8192–

212Greene County, ILIL11,3132–

213Cavalier County, NDND3,4972–

214Todd County, MNMN26,0602–

215Mitchell County, IAIA10,6502–

216Pepin County, WIWI7,5132–

217Wabasha County, MNMN21,5372–

218Spink County, SDSD6,1552–

219Holt County, MOMO4,2002–

220Elk County, PAPA29,9262–

221Franklin County, ILIL36,9162–

222Stanton County, NENE5,7442–

223Osceola County, IAIA5,9802–

224Casey County, KYKY16,2052–

225Clay County, IAIA16,2022–

226Fillmore County, MNMN21,5402–

227Lake of the Woods County, MNMN3,7702–

228Vermillion County, ININ15,4882–

229Christian County, ILIL33,4432–

230Wayne County, MOMO10,7822–

231White County, ININ25,1642–

232Burke County, NDND2,1322–

233Harrison County, MOMO8,2812–

234Cass County, IAIA12,9602–

235Vernon County, WIWI31,4432–

236Delaware County, IAIA17,6742–

237Scott County, VAVA21,2002–

238Clay County, ILIL12,7932–

239Butler County, KYKY12,5202–

240Clark County, WIWI35,0522–

241Marshall County, KSKS9,8522–

242Wadena County, MNMN14,3882–

243Liberty County, MTMT1,9572–

244Crawford County, ININ10,5092–

245Ransom County, NDND5,6172–

246McLean County, KYKY9,0642–

247Clarke County, IAIA9,5742–

248Price County, WIWI13,9882–

249Lewis County, WVWV16,3942–

250Perry County, OHOH35,9182–

251Jo Daviess County, ILIL21,5942–

252Wibaux County, MTMT8852–

253Garfield County, WAWA2,4162–

254Monroe County, OHOH12,9942–

255Union County, TNTN21,4502–

256Monona County, IAIA8,5392–

257Ozark County, MOMO9,1722–

258Buchanan County, IAIA20,8832–

259Garrett County, MDMD28,3702–

260Polk County, TNTN18,5922–

261Garden County, NENE1,8042–

262Morrison County, MNMN34,6202–

263Golden Valley County, NDND1,8082–

264Bedford County, PAPA47,4802–

265Warren County, ININ8,4742–

266Lee County, VAVA21,6422–

267Marinette County, WIWI42,5742–

268Green County, WIWI37,2272–

269Osage County, MOMO13,6112–

270Kittson County, MNMN4,0312–

271Jasper County, ILIL9,0322–

272Kewaunee County, WIWI20,7582–

273Kidder County, NDND2,3932–

274Newton County, ARAR7,0262–

275Warren County, PAPA37,0382–

276Bracken County, KYKY8,5112–

277Jefferson County, NENE7,0702–

278Daviess County, MOMO8,5582–

279Alpena County, MIMI28,8532–

280Rawlins County, KSKS2,4312–

281Shelby County, IAIA11,6892–

282Wyandot County, OHOH21,5672–

283Hand County, SDSD3,1212–

284Brown County, ININ15,7772–

285Grant County, SDSD7,5342–

286Butler County, NENE8,5072–

287Schuyler County, MOMO4,1402–

288Potter County, PAPA15,8972–

289Carroll County, VAVA29,2992–

290Fallon County, MTMT2,9592–

291Pawnee County, NENE2,5102–

292O'Brien County, IAIA14,2202–

293Auglaize County, OHOH45,9092–

294Judith Basin County, MTMT2,1622–

295Greenup County, KYKY35,2132–

296Perkins County, NENE2,8492–

297Knox County, MEME41,1172–

298Buchanan County, VAVA18,4922–

299Lincoln County, WVWV19,1772–

300Pendleton County, KYKY14,8002–

301Johnson County, KYKY22,0512–

302Oxford County, MEME60,3462–

303Keweenaw County, MIMI2,1862–

304Ottawa County, KSKS5,7442–

305Antelope County, NENE6,3522–

306Floyd County, KYKY34,4012–

307Greene County, IAIA8,6582–

308Lincoln County, SDSD77,1452–

309Sweet Grass County, MTMT3,7622–

310Morgan County, ININ74,9672–

311Jackson County, WVWV27,4502–

312Ohio County, ININ5,9942–

313Clay County, ININ26,4102–

314Craig County, VAVA4,8002–

315Dubois County, ININ44,0162–

316Calhoun County, IAIA9,5622–

317Grayson County, KYKY27,4062–

318Boone County, IAIA26,7992–

319Morrow County, OHOH36,3052–

320Floyd County, IAIA14,9012–

321Saunders County, NENE23,7022–

322Greene County, ININ31,1652–

323Brown County, NENE2,8262–

324Benton County, ININ8,8832–

325Ford County, ILIL13,2162–

326Rush County, KSKS2,8452–

327Preston County, WVWV34,0042–

328Union County, ININ6,8632–

329Ripley County, MOMO10,7172–

330Russell County, KYKY18,6082–

331Powell County, KYKY12,8122–

332Jennings County, ININ27,6222–

333Florence County, WIWI4,7482–

334Coos County, NHNH31,3432–

335Howard County, NENE6,5382–

336Belknap County, NHNH65,1472–

337Bottineau County, NDND6,2843–

338Carlisle County, KYKY4,7473–

339Swift County, MNMN9,7633–

340Harrison County, ININ40,4373–

341Pike County, KYKY54,7213–

342Hickory County, MOMO9,0443–

343Lincoln County, WIWI28,4033–

344Hamilton County, NYNY5,0063–

345Scott County, ININ25,0533–

346Somerset County, MEME51,6203–

347Franklin County, IAIA9,8683–

348Webster County, NENE3,3363–

349Miller County, MOMO25,8173–

350Cleburne County, ARAR25,6723–

351Braxton County, WVWV11,8853–

352Ringgold County, IAIA4,6423–

353Preble County, OHOH40,6643–

354Le Sueur County, MNMN29,4533–

355Hitchcock County, NENE2,4673–

356St. Croix County, WIWI98,2763–

357Mitchell County, KSKS5,5903–

358Lewis County, KYKY12,9013–

359Cedar County, IAIA18,3593–

360Lucas County, IAIA8,8473–

361Winston County, ALAL23,8293–

362Barron County, WIWI46,4843–

363Linn County, KSKS9,9503–

364Clark County, ILIL15,1143–

365Boone County, ININ80,6893–

366Henderson County, ILIL5,9843–

367Susquehanna County, PAPA38,2373–

368Laurel County, KYKY63,7463–

369Kearney County, NENE6,7903–

370Hinsdale County, COCO7533–

371Russell County, VAVA25,3323–

372Marshall County, MNMN8,7983–

373Union County, IAIA11,8293–

374Tipton County, ININ15,3193–

375Waldo County, MEME40,6933–

376Jackson County, OHOH32,8173–

377Carroll County, NHNH52,7843–

378Chippewa County, MNMN12,4063–

379Dallas County, IAIA118,4573–

380Bollinger County, MOMO10,6463–

381Pierce County, NENE7,3783–

382Houston County, MNMN18,4003–

383Edwards County, ILIL5,8983–

384Washington County, WIWI139,2383–

385Cloud County, KSKS8,8333–

386Washington County, ILIL13,5643–

387Stark County, NDND34,0133–

388Herkimer County, NYNY59,2193–

389Owen County, ININ21,8863–

390Camas County, IDID1,3163–

391Rock County, MNMN9,5243–

392Merrick County, NENE7,9053–

393Grant County, WIWI52,4463–

394Cheyenne County, KSKS2,6043–

395Franklin County, MEME30,8243–

396Perry County, PAPA46,8063–

397Lawrence County, ININ45,5683–

398Hancock County, IAIA10,5283–

399Macon County, TNTN27,6633–

400Rutland County, VTVT59,6533–

401Wayne County, NENE10,0203–

402Clinton County, PAPA37,8703–

403Taylor County, IAIA5,8353–

404Marion County, ARAR17,5933–

405Presque Isle County, MIMI13,1283–

406Ste. Genevieve County, MOMO18,6893–

407Piscataquis County, MEME17,4093–

408Morgan County, KYKY14,4153–

409Orange County, VTVT30,0023–

410Sullivan County, ININ20,8313–

411Crook County, WYWY7,8523–

412Petroleum County, MTMT5483–

413Crawford County, MOMO22,9293–

414Bremer County, IAIA25,2963–

415Chase County, KSKS2,5723–

416Grainger County, TNTN25,7393–

417Taylor County, WVWV16,2873–

418Crawford County, OHOH41,8963–

419Orleans County, VTVT27,6003–

420Grant County, NENE5613–

421Wright County, IAIA12,8013–

422Woodford County, ILIL38,1113–

423Jackson County, ININ47,3703–

424Wright County, MNMN157,5593–

425Trimble County, KYKY8,7013–

426Cameron County, PAPA4,2113–

427Allen County, KYKY22,5363–

428Randolph County, ININ24,4383–

429Furnas County, NENE4,5243–

430Ness County, KSKS2,6173–

431Nemaha County, NENE7,1023–

432Mercer County, OHOH42,7373–

433Putnam County, WVWV56,8853–

434Barton County, MOMO11,7953–

435Douglas County, MNMN40,1203–

436Wyoming County, PAPA25,7903–

437Stark County, ILIL5,3193–

438Lake County, MNMN10,7463–

439Sibley County, MNMN15,3563–

440Searcy County, ARAR7,8483–

441Brown County, MNMN25,5173–

442Oconto County, WIWI40,1953–

443Meigs County, OHOH21,5873–

444Crawford County, ILIL18,6483–

445Wayne County, TNTN16,4163–

446Sauk County, WIWI66,6523–

447Whitley County, ININ35,0463–

448Lincoln County, KSKS2,8613–

449Jersey County, ILIL21,1603–

450Northumberland County, PAPA89,9203–

451Randolph County, WVWV26,8823–

452Armstrong County, PAPA63,6983–

453Oregon County, MOMO8,7093–

454Wayne County, ILIL15,8823–

455Camden County, MOMO44,0473–

456Sioux County, IAIA36,7743–

457Clare County, MIMI31,5433–

458Benton County, MOMO20,5363–

459Stone County, MOMO32,5033–

460Door County, WIWI30,6163–

461Piute County, UTUT1,5093–

462Mineral County, COCO9103–

463Franklin County, ININ23,2863–

464Sully County, SDSD1,4793–

465Cottonwood County, MNMN11,4053–

466Gladwin County, MIMI26,0773–

467Douglas County, MOMO12,3423–

468Worth County, IAIA7,3383–

469Otsego County, MIMI26,0803–

470Washington County, NENE21,3023–

471St. Clair County, MOMO9,9763–

472DeKalb County, ININ44,5353–

473Upshur County, WVWV23,7583–

474McCone County, MTMT1,7203–

475Rabun County, GAGA17,7643–

476Bradford County, PAPA59,6003–

477Sullivan County, NHNH43,9613–

478Cherokee County, IAIA11,3693–

479Grand Isle County, VTVT7,5113–

480Carroll County, OHOH26,4753–

481Chisago County, MNMN59,1423–

482Decatur County, ININ26,5763–

483Kingman County, KSKS7,0293–

484Livingston County, KYKY8,8633–

485Arthur County, NENE3963–

486Dallas County, MOMO18,0253–

487Cedar County, MOMO14,8883–

488Murray County, GAGA41,6073–

489Oscoda County, MIMI8,7233–

490Langlade County, WIWI19,5343–

491Winneshiek County, IAIA19,7333–

492Tazewell County, ILIL130,0493–

493Caledonia County, VTVT30,4143–

494Foster County, NDND3,2123–

495Phillips County, KSKS4,7283–

496Warren County, IAIA57,3313–

497Coffey County, KSKS8,4673–

498Dade County, GAGA16,1543–

499Hancock County, ININ90,9693–

500Edgar County, ILIL16,3233–

SHOWING 1–500 OF 3,122

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Download CSV (full list, 3,122 rows)How this score is calculated

UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS

Frequently asked

Which county has the lowest diversity score?

Slope County, North Dakota ranks #1 with 0 (1990 Decennial Census).

What are the top 5 counties by diversity score?

Slope County, North Dakota, Worth County, Missouri, Pierce County, North Dakota, Sequatchie County, Tennessee, Rock County, Nebraska.

How many counties are in this ranking?

3,122 counties qualify after filtering for population minimums and data availability. The ranking covers 1990 Decennial Census data.

How is diversity score measured?

CensusEasy Diversity Score (0 to 100): the chance that two random residents are of a different race or ethnicity, rescaled so 100 is a perfectly even split across all five groups. A Simpson diversity index over the five ACS race and ethnicity shares. Source: US Census Bureau, 1990 Decennial Census.