RANKING · 2020 CENSUS · 500 SHOWN OF 2,908

Most segregated, US counties · 2020

US counties ranked by the CensusEasy Segregation Score, the White vs non-White index of dissimilarity across census tracts (2020 ACS). Higher means residents are more sorted into separate neighborhoods. Lyman County, South Dakota leads at 89. 2,908 counties qualify in total. The top 25 average 68, against an all-counties median of 28.

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SAME RANKING BYMetros

YEAR2020 2024

RANKPLACESTATEPOPSEGREGATION SCOREVS –

01Lyman County, SDSD3,69489–

02Apache County, AZAZ64,44582–

03Johnson County, ILIL13,36381–

04Blaine County, MTMT6,86077–

05San Juan County, UTUT14,54271–

06Rosebud County, MTMT8,25370–

07Navajo County, AZAZ109,94670–

08Preston County, WVWV34,00470–

09Lee County, VAVA21,64270–

10Benson County, NDND5,75969–

11Clay County, KYKY19,46567–

12North Slope, AKAK10,58267–

13Martin County, KYKY10,69766–

14Noble County, OHOH14,27666–

15Jackson County, SDSD2,66665–

16Wayne County, MIMI1,769,03865–

17Colfax County, NENE10,93465–

18Pondera County, MTMT6,07264–

19Zavala County, TXTX9,03764–

20Bronx County, NYNY1,406,33263–

21Dawson County, NENE24,45262–

22Essex County, NJNJ896,37962–

23DeKalb County, GAGA774,39461–

24Ouachita Parish, LALA158,54261–

25Orleans Parish, LALA362,15461–

26Shelby County, TNTN910,22661–

27Presidio County, TXTX5,43361–

28Passaic County, NJNJ531,62460–

29Plymouth County, MAMA546,82960–

30Randolph County, ILIL29,92160–

31Philadelphia County, PAPA1,574,28159–

32Mountrail County, NDND9,39559–

33Allamakee County, IAIA14,23859–

34La Paz County, AZAZ16,71159–

35Baltimore, MDMD569,99759–

36Crawford County, ILIL18,64859–

37Franklin, VAVA8,47859–

38Orange County, ININ19,83459–

39Jefferson County, ALAL665,74258–

40Milwaukee County, WIWI924,21658–

41McKinley County, NMNM68,11958–

42Santa Cruz County, AZAZ50,02058–

43Swain County, NCNC14,02458–

44Dubois County, ININ44,01657–

45Fulton County, GAGA1,098,79157–

46Morgan County, TNTN22,16057–

47Erie County, NYNY946,74157–

48Richmond, VAVA237,25757–

49Grant Parish, LALA22,07556–

50Fayette County, ILIL20,79056–

51Etowah County, ALAL103,88656–

52Gila County, AZAZ53,80156–

53District of Columbia, DCDC693,64556–

54Cuyahoga County, OHOH1,232,92556–

55Monroe County, MSMS33,31856–

56Hinds County, MSMS211,88856–

57Mahoning County, OHOH224,70655–

58Sawyer County, WIWI18,84655–

59Lake County, ININ504,61255–

60Kings County, NYNY2,653,96355–

61Essex County, MAMA826,65355–

62Franklin County, NYNY46,50055–

63Leflore County, MSMS25,68655–

64Delaware County, PAPA580,93755–

65Los Angeles County, CACA9,694,93455–

66Hampden County, MAMA464,33855–

67Berks County, PAPA440,07254–

68Cook County, ILIL5,194,62554–

69Fayette County, ININ23,53354–

70Monterey County, CACA433,72954–

71Cass County, ILIL12,46354–

72Jefferson County, ARAR62,98754–

73Emporia, VAVA5,44754–

74Genesee County, MIMI401,09354–

75Bethel Census Area, AKAK18,39154–

76Union County, NJNJ601,86354–

77St. Louis County, MOMO990,91154–

78Caddo Parish, LALA224,22654–

79Harrison County, OHOH14,07054–

80St. Louis, MOMO278,14453–

81Huntingdon County, PAPA43,00153–

82Alexander County, ILIL4,57053–

83Macon County, ALAL18,13253–

84Muskegon County, MIMI177,90153–

85Starr County, TXTX66,31953–

86Dallas County, ALAL35,14053–

87Calcasieu Parish, LALA208,46653–

88Hill County, MTMT16,16753–

89Queens County, NYNY2,358,18253–

90Oneida County, NYNY226,39253–

91Nobles County, MNMN22,33853–

92Saginaw County, MIMI187,68853–

93Kane County, ILIL525,75752–

94Glacier County, MTMT13,46352–

95De Soto Parish, LALA27,38152–

96Forrest County, MSMS79,03452–

97Val Verde County, TXTX47,83552–

98Jefferson County, TXTX254,32152–

99Garza County, TXTX4,51052–

100East Baton Rouge Parish, LALA456,18052–

101Allegany County, MDMD66,84852–

102Cook County, MNMN5,52251–

103New York County, NYNY1,664,86251–

104Miller County, ARAR42,35751–

105Vilas County, WIWI23,76151–

106Providence County, RIRI678,17951–

107Saguache County, COCO6,73251–

108Daviess County, ININ34,20951–

109Stephenson County, ILIL43,22051–

110Harris County, TXTX5,045,02651–

111Union County, PAPA42,31351–

112Menominee County, WIWI4,19951–

113Greene County, MSMS13,70751–

114Collier County, FLFL417,13151–

115Lehigh County, PAPA384,38351–

116Hamilton County, OHOH838,41851–

117Marion County, GAGA7,67651–

118Crawford County, IAIA16,23750–

119Rapides Parish, LALA125,87750–

120Clay County, NCNC12,23950–

121Franklin County, ALAL32,44950–

122Acadia Parish, LALA57,03250–

123Mississippi County, ARAR37,82850–

124Jackson County, WVWV27,45050–

125Putnam County, OHOH34,38050–

126Vermilion County, ILIL71,25950–

127Sumter County, FLFL157,77250–

128Cass County, MNMN31,43050–

129Bayfield County, WIWI16,78750–

130Moody County, SDSD6,63250–

131Mecklenburg County, NCNC1,233,38350–

132Montgomery County, ALAL225,89150–

133Morehouse Parish, LALA23,70550–

134Floyd County, GAGA101,37849–

135Camden County, NJNJ535,79949–

136Monroe County, NYNY750,50649–

137Onondaga County, NYNY466,58449–

138Assumption Parish, LALA19,72049–

139Tuscaloosa County, ALAL241,36849–

140Salem County, NJNJ66,28049–

141Beltrami County, MNMN47,05549–

142Kern County, CACA927,06849–

143Ferry County, WAWA7,51749–

144Wayne County, MSMS19,80749–

145Richland County, OHOH124,89349–

146Jasper County, TXTX33,07549–

147McDowell County, WVWV16,87849–

148Caldwell County, KYKY12,60949–

149Baltimore County, MDMD847,65049–

150Greene County, PAPA33,88549–

151Evangeline Parish, LALA31,98049–

152Yuma County, AZAZ224,44949–

153Fremont County, WYWY39,46449–

154Montgomery County, NCNC26,40349–

155Suffolk County, MAMA791,89149–

156Brule County, SDSD5,27848–

157McCreary County, KYKY17,12448–

158Benton County, MSMS7,50248–

159Jasper County, MSMS15,78548–

160Mobile County, ALAL411,65848–

161Liberty County, FLFL8,03548–

162Fulton County, ILIL32,90148–

163Luzerne County, PAPA332,12648–

164Scott County, MOMO37,97548–

165Rolette County, NDND11,68848–

166Madison County, MSMS116,29848–

167Montgomery County, OHOH539,59848–

168Kandiyohi County, MNMN44,72048–

169Robertson County, TNTN80,17548–

170Putnam County, GAGA23,72248–

171St. Clair County, ILIL250,70848–

172Lincoln County, MSMS35,01248–

173Jackson County, MOMO732,99448–

174Hidalgo County, NMNM3,92948–

175Yakima County, WAWA259,18548–

176West Feliciana Parish, LALA15,13448–

177Buena Vista County, IAIA20,44948–

178Russell County, VAVA25,33248–

179Butler County, KYKY12,52048–

180Prince George's County, MDMD970,37448–

181Lauderdale County, MSMS70,31748–

182Nassau County, NYNY1,398,93948–

183Bibb County, ALAL22,26248–

184Lawrence County, PAPA83,91148–

185Adams County, MSMS30,06148–

186Glynn County, GAGA87,59948–

187Lincoln County, ARAR12,76448–

188Cambria County, PAPA128,96848–

189Hall County, GAGA226,56848–

190Washington County, MSMS40,44647–

191Berrien County, MIMI152,44447–

192Bibb County, GAGA157,55647–

193Miami-Dade County, FLFL2,802,02947–

194Madison County, OHOH46,98547–

195Neshoba County, MSMS28,73247–

196Coosa County, ALAL10,16147–

197Bolivar County, MSMS28,26247–

198Morgan County, ILIL32,51547–

199Santa Cruz County, CACA258,85247–

200Jones County, MSMS66,49647–

201Mineral County, NVNV4,40747–

202Muscogee County, GAGA202,17147–

203Clearfield County, PAPA78,10047–

204Irwin County, GAGA9,02047–

205Dixie County, FLFL18,03847–

206Fairfield County, OHOH169,75247–

207Roane County, WVWV13,31747–

208Rensselaer County, NYNY160,51047–

209Jackson County, MSMS147,66647–

210Logan County, ILIL27,18247–

211Madera County, CACA167,92747–

212Waller County, TXTX69,85846–

213Mercer County, NJNJ399,28946–

214Forest County, PAPA6,61446–

215San Augustine County, TXTX7,72246–

216Jefferson County, OHOH63,59746–

217Trumbull County, OHOH198,97246–

218Beadle County, SDSD19,62446–

219Red River Parish, LALA7,16546–

220Benton County, MNMN41,74446–

221Guilford County, NCNC562,23446–

222Gallatin County, KYKY8,84046–

223Atlantic County, NJNJ278,65746–

224Lawrence County, KYKY15,76546–

225Wyoming County, NYNY39,74146–

226Montgomery County, ILIL28,07646–

227Dauphin County, PAPA293,35146–

228Mingo County, WVWV21,45546–

229Calhoun County, ILIL4,30046–

230Hidalgo County, TXTX921,54946–

231Douglas County, ILIL19,88046–

232Beauregard Parish, LALA36,67346–

233Denver County, COCO740,61346–

234Mercer County, PAPA107,86046–

235Westchester County, NYNY1,015,74346–

236Morgan County, ALAL126,48346–

237Portsmouth, VAVA96,77746–

238Dallas County, TXTX2,661,39746–

239Ventura County, CACA830,85146–

240Cherokee County, SCSC58,27546–

241Essex County, NYNY36,43846–

242Marshall County, ININ46,59946–

243Knox County, NENE8,33546–

244Trempealeau County, WIWI31,17146–

245Pickaway County, OHOH62,97846–

246Pike County, PAPA62,80846–

247Sullivan County, MOMO5,73845–

248Sebastian County, ARAR130,64145–

249Oakland County, MIMI1,288,33745–

250Georgetown County, SCSC65,91245–

251Carlton County, MNMN36,71145–

252Schenectady County, NYNY162,58145–

253Charleston County, SCSC436,20045–

254Cross County, ARAR16,18645–

255Plaquemines Parish, LALA22,25645–

256Davidson County, NCNC180,18245–

257Dougherty County, GAGA82,61645–

258Summit County, OHOH538,37645–

259Mercer County, WVWV57,50345–

260Webster County, WVWV7,76045–

261Coconino County, AZAZ144,36845–

262Potter County, TXTX114,45345–

263Erie County, PAPA265,83245–

264Clark County, OHOH135,34045–

265Crawford County, GAGA12,20645–

266Pocahontas County, WVWV7,60245–

267Yazoo County, MSMS22,94745–

268Peoria County, ILIL178,55345–

269Kent County, MIMI675,23245–

270Lee County, FLFL875,60745–

271Elliott County, KYKY7,26545–

272Kimble County, TXTX4,43845–

273Cameron County, PAPA4,21145–

274Cooke County, TXTX44,46145–

275Wayne County, KYKY19,59745–

276Richmond County, GAGA206,55945–

277Lebanon County, PAPA146,38045–

278Crittenden County, ARAR46,21044–

279Lowndes County, GAGA122,86744–

280Johnson County, WYWY8,90844–

281Covington County, MSMS17,89844–

282Bamberg County, SCSC12,79644–

283Roanoke, VAVA99,11144–

284Murray County, MNMN7,94244–

285Graham County, NCNC8,19044–

286Allegheny County, PAPA1,225,03544–

287Coahoma County, MSMS19,84944–

288Marion County, OHOH65,11544–

289Lancaster County, PAPA563,15944–

290Montgomery County, NYNY50,04644–

291Hamilton County, TNTN390,83344–

292Rockland County, NYNY357,39744–

293Hamblen County, TNTN68,84344–

294Forsyth County, NCNC401,71844–

295Palm Beach County, FLFL1,575,72644–

296Lincoln Parish, LALA48,36044–

297Vermilion Parish, LALA57,67144–

298Douglas County, NENE606,46044–

299Coos County, NHNH31,34344–

300Allen County, ININ402,32944–

301Pulaski County, ARAR404,61144–

302McDuffie County, GAGA21,64044–

303Wayne County, GAGA32,48144–

304Lorain County, OHOH323,21944–

305Lucas County, OHOH423,34744–

306Putnam County, ININ37,87644–

307Live Oak County, TXTX11,92944–

308Richland Parish, LALA19,58244–

309Hardy County, WVWV14,33744–

310Jefferson Parish, LALA431,39844–

311Wetzel County, WVWV13,73444–

312Whiteside County, ILIL54,12144–

313Habersham County, GAGA50,41644–

314Lake County, ILIL719,33944–

315Black Hawk County, IAIA131,53244–

316Mississippi County, MOMO12,00344–

317Schuylkill County, PAPA145,08544–

318Richland County, SCSC434,95644–

319LaGrange County, ININ41,30544–

320Big Horn County, MTMT12,75244–

321Vernon Parish, LALA45,09144–

322Stafford County, KSKS4,00543–

323Fremont County, COCO50,03943–

324Pike County, ININ12,00343–

325Marion County, ININ992,19643–

326Day County, SDSD5,48443–

327Tama County, IAIA16,79643–

328Edgecombe County, NCNC49,12143–

329Ramsey County, MNMN541,62343–

330Maricopa County, AZAZ4,689,55843–

331Will County, ILIL712,25343–

332Santa Barbara County, CACA442,06543–

333Greene County, GAGA21,36743–

334Floyd County, IAIA14,90143–

335Sac County, IAIA9,52543–

336Franklin County, OHOH1,361,53643–

337Indiana County, PAPA82,87843–

338Hamilton County, NENE9,67843–

339Cumberland County, NJNJ157,14843–

340Somerset County, PAPA72,00443–

341Kankakee County, ILIL105,52543–

342Newport County, RIRI83,05143–

343Twiggs County, GAGA7,59743–

344Grenada County, MSMS20,86843–

345Montour County, PAPA17,86843–

346Aransas County, TXTX26,14643–

347Adams County, WAWA21,48843–

348DeKalb County, MOMO9,79543–

349Leake County, MSMS21,66243–

350Jackson County, MIMI159,55243–

351Orange County, CACA3,149,50743–

352Wyandotte County, KSKS170,59743–

353Nome Census Area, AKAK9,83043–

354Clinton County, NYNY78,13843–

355Carroll County, ARAR29,26342–

356Eaton County, MIMI109,58142–

357Lawrence County, ILIL13,79042–

358Lee County, NCNC70,25842–

359Terrell County, GAGA8,65642–

360Macon County, ILIL99,30042–

361Davidson County, TNTN745,90442–

362Erie County, OHOH73,29642–

363Seminole County, GAGA9,16242–

364Sangamon County, ILIL194,17042–

365Niagara County, NYNY208,91242–

366Harrison County, TXTX71,95642–

367Stark County, OHOH373,77142–

368Allen County, OHOH100,88142–

369Henry County, TNTN32,89642–

370Alcorn County, MSMS34,56942–

371St. John the Baptist Parish, LALA39,87542–

372Clarke County, MSMS15,10242–

373Jefferson County, KYKY795,22242–

374Noble County, ININ47,93742–

375Beaver County, PAPA166,03242–

376Floyd County, ININ82,15342–

377Lyon County, KSKS32,26642–

378Angelina County, TXTX88,15442–

379Madison County, ININ135,08842–

380Cameron County, TXTX433,94642–

381Mitchell County, GAGA20,46742–

382Warren County, ILIL16,22242–

383Pike County, KYKY54,72142–

384Chicot County, ARAR9,10742–

385Washington County, ARAR271,21342–

386Woodbury County, IAIA106,64942–

387Jones County, TXTX20,86142–

388McLennan County, TXTX272,02042–

389Gogebic County, MIMI14,28542–

390Richmond County, NYNY501,29042–

391Pointe Coupee Parish, LALA19,52042–

392Rockcastle County, KYKY16,14842–

393Dickenson County, VAVA13,23642–

394St. Charles Parish, LALA50,58642–

395Norfolk, VAVA231,01342–

396Pearl River County, MSMS59,36342–

397Maverick County, TXTX58,82341–

398Tarrant County, TXTX2,248,46641–

399Bedford County, TNTN55,27341–

400Racine County, WIWI198,91941–

401Garland County, ARAR99,69541–

402Choctaw County, ALAL11,90441–

403Boone County, WVWV20,25141–

404Union County, ARAR36,92641–

405Chatham County, GAGA311,85541–

406Brooke County, WVWV21,14241–

407Worcester County, MAMA888,50241–

408Lassen County, CACA28,11741–

409San Juan County, NMNM120,34041–

410Beaufort County, SCSC204,43341–

411Johnson County, KYKY22,05141–

412San Diego County, CACA3,282,24841–

413Woodson County, KSKS3,11841–

414Cass County, ININ37,83641–

415York County, PAPA473,19741–

416Contra Costa County, CACA1,170,07041–

417Cape May County, NJNJ93,39041–

418Scioto County, OHOH71,36541–

419Henry County, KYKY16,44741–

420Bond County, ILIL16,95941–

421St. Landry Parish, LALA80,76541–

422Winnebago County, ILIL283,67441–

423McLean County, NDND9,74041–

424Santa Fe County, NMNM156,90741–

425Blaine County, OKOK8,51541–

426Madison Parish, LALA8,84441–

427Floyd County, KYKY34,40141–

428Peach County, GAGA29,87741–

429Centre County, PAPA157,39341–

430Muskingum County, OHOH87,01441–

431LaPorte County, ININ111,29441–

432Sullivan County, ININ20,83141–

433Wilson County, NCNC81,15041–

434Tift County, GAGA42,25441–

435Anderson County, TNTN82,06641–

436Lowndes County, MSMS57,34641–

437Duval County, TXTX9,40241–

438Washington County, NYNY59,35341–

439Pima County, AZAZ1,074,68541–

440Albany County, NYNY321,22541–

441Loudon County, TNTN63,76441–

442Schuyler County, ILIL6,65741–

443Manatee County, FLFL468,20040–

444Muhlenberg County, KYKY30,63440–

445Hempstead County, ARAR19,08040–

446Clarke County, IAIA9,57440–

447Calhoun County, MIMI133,40840–

448Madison County, TNTN100,79040–

449Lake County, COCO7,55240–

450Craighead County, ARAR116,95740–

451Houston County, ALAL110,31840–

452Robertson County, TXTX17,83940–

453Burlington County, NJNJ481,43940–

454Ottawa County, MIMI308,45940–

455Broward County, FLFL2,013,31740–

456Hennepin County, MNMN1,284,78440–

457Chattooga County, GAGA25,30040–

458Cumberland County, TNTN66,30040–

459Smith County, TXTX252,54940–

460Pender County, NCNC72,11140–

461Indian River County, FLFL172,79940–

462Shawano County, WIWI41,56040–

463Tippah County, MSMS21,38940–

464San Mateo County, CACA743,56840–

465Alexandria, VAVA160,66240–

466Grant County, WAWA105,72740–

467Knox County, ILIL47,76740–

468Newton County, GAGA125,58340–

469Calhoun County, FLFL13,28940–

470Decatur County, ININ26,57640–

471Jones County, IAIA21,25340–

472Henrico County, VAVA342,77540–

473Andrew County, MOMO18,24140–

474Northampton County, PAPA324,41140–

475Henry County, GAGA264,92240–

476Todd County, MNMN26,06040–

477Pemiscot County, MOMO14,46540–

478Fresno County, CACA1,035,45640–

479Ste. Genevieve County, MOMO18,68940–

480Volusia County, FLFL606,57340–

481Carter County, MOMO5,41840–

482Bourbon County, KYKY20,24340–

483Brown County, ILIL6,40140–

484Maui County, HIHI160,59240–

485Sevier County, ARAR15,75840–

486St. Clair County, MIMI160,48640–

487Marshall County, MSMS34,65440–

488Chautauqua County, NYNY124,12640–

489Lackawanna County, PAPA216,50240–

490Hot Spring County, ARAR33,45140–

491Saline County, NENE14,99640–

492Bureau County, ILIL32,51040–

493Madison County, ALAL433,51639–

494Casey County, KYKY16,20539–

495Lee County, TXTX18,72939–

496Washington County, KYKY12,36839–

497Anderson County, TXTX59,80539–

498Pope County, ARAR64,97639–

499Wise County, VAVA34,82439–

500Midland County, TXTX187,85539–

SHOWING 1–500 OF 2,908

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Download CSV (full list, 2,908 rows)How this score is calculated

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

Frequently asked

Which county has the highest segregation score?

Lyman County, South Dakota ranks #1 with 89 (2020 Decennial Census).

What are the top 5 counties by segregation score?

Lyman County, South Dakota, Apache County, Arizona, Johnson County, Illinois, Blaine County, Montana, San Juan County, Utah.

How many counties are in this ranking?

2,908 counties qualify after filtering for population minimums and data availability. The ranking covers 2020 Decennial Census data.

How is segregation score measured?

CensusEasy Segregation Score (0 to 100): the index of dissimilarity between White and all other residents measured across the census tracts within a county or metro. It reads as the share of residents who would have to move neighborhoods for every tract to match the area's overall racial split. Available for counties and metros, 2020 and 2024. Source: US Census Bureau, 2020 Decennial Census.