RANKING · 2020 CENSUS · 500 SHOWN OF 1,804

Largest Slovak population, US counties · 2020

US counties ranked by the number of residents who are Slovak ancestry, from the 2023 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. Allegheny County, Pennsylvania leads at 40,190. 1,804 counties qualify in total. Pennsylvania carries 11 of the top 25 entries.

All statesAll rankings

SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPSLOVAK POPULATIONVS 2000

01Allegheny County, PAPA1,225,03540,190–

02Cuyahoga County, OHOH1,232,92528,994–

03Westmoreland County, PAPA349,32419,621–

04Luzerne County, PAPA332,12613,306–

05Mahoning County, OHOH224,70612,390–

06Cook County, ILIL5,194,62512,372–

07Summit County, OHOH538,3768,803–

08Cambria County, PAPA128,9688,111–

09Lake County, ININ504,6127,630–

10Washington County, PAPA210,8026,857–

11Northampton County, PAPA324,4116,821–

12Fayette County, PAPA123,0216,652–

13Lehigh County, PAPA384,3836,480–

14Lorain County, OHOH323,2196,435–

15Maricopa County, AZAZ4,689,5586,174–

16Trumbull County, OHOH198,9725,910–

17Los Angeles County, CACA9,694,9345,604–

18Medina County, OHOH185,0255,418–

19Lake County, OHOH232,2175,241–

20Butler County, PAPA200,1695,071–

21Franklin County, OHOH1,361,5364,918–

22Montgomery County, PAPA877,6434,559–

23DuPage County, ILIL934,2984,429–

24Broome County, NYNY195,7364,272–

25Lackawanna County, PAPA216,5024,256–

26Middlesex County, NJNJ883,3354,075–

27Beaver County, PAPA166,0323,912–

28Bucks County, PAPA647,8283,842–

29Will County, ILIL712,2533,813–

30Erie County, PAPA265,8323,766–

31Wayne County, MIMI1,769,0383,736–

32Chester County, PAPA557,1163,643–

33San Diego County, CACA3,282,2483,503–

34Macomb County, MIMI886,2213,464–

35Stark County, OHOH373,7713,448–

36King County, WAWA2,344,9393,446–

37Oakland County, MIMI1,288,3373,316–

38Fairfax County, VAVA1,167,8733,228–

39Schuylkill County, PAPA145,0853,073–

40Indiana County, PAPA82,8783,036–

41Ocean County, NJNJ673,7463,009–

42Orange County, CACA3,149,5072,961–

43Mercer County, PAPA107,8602,867–

44Milwaukee County, WIWI924,2162,836–

45Porter County, ININ176,0492,834–

46Hillsborough County, FLFL1,574,1152,789–

47Geauga County, OHOH95,6762,776–

48Monmouth County, NJNJ651,0352,707–

49Portage County, OHOH163,4042,614–

50Union County, NJNJ601,8632,553–

51Berks County, PAPA440,0722,532–

52Morris County, NJNJ524,2512,506–

53Carbon County, PAPA65,8682,456–

54Kings County, NYNY2,653,9632,438–

55Montgomery County, MDMD1,074,5822,415–

56Centre County, PAPA157,3932,345–

57Palm Beach County, FLFL1,575,7262,331–

58New York County, NYNY1,664,8622,321–

59Philadelphia County, PAPA1,574,2812,311–

60Hennepin County, MNMN1,284,7842,290–

61Bergen County, NJNJ977,0262,247–

62Clark County, NVNV2,407,2262,242–

63Broward County, FLFL2,013,3172,219–

64Middlesex County, MAMA1,669,9792,171–

65Westchester County, NYNY1,015,7432,146–

66Burlington County, NJNJ481,4392,119–

67Armstrong County, PAPA63,6982,110–

68Wake County, NCNC1,257,2352,106–

69Pinellas County, FLFL948,5632,099–

70Somerset County, NJNJ356,4862,083–

71Harris County, TXTX5,045,0262,038–

72Delaware County, OHOH242,0321,973–

73York County, PAPA473,1971,854–

74Lake County, ILIL719,3391,821–

75Queens County, NYNY2,358,1821,799–

76Cumberland County, PAPA277,2701,738–

77Anne Arundel County, MDMD603,3801,713–

78Dauphin County, PAPA293,3511,705–

79Mercer County, NJNJ399,2891,688–

80LaSalle County, ILIL107,7731,667–

81Lancaster County, PAPA563,1591,654–

82St. Louis County, MOMO990,9111,631–

83Lee County, FLFL875,6071,612–

84Clearfield County, PAPA78,1001,582–

85Sarasota County, FLFL479,9581,569–

86Orange County, FLFL1,528,0021,561–

87Waukesha County, WIWI417,2101,530–

88Somerset County, PAPA72,0041,522–

89Baltimore County, MDMD847,6501,521–

90Suffolk County, NYNY1,546,0901,471–

91Santa Clara County, CACA1,914,3911,469–

92Pima County, AZAZ1,074,6851,416–

93District of Columbia, DCDC693,6451,412–

94Lucas County, OHOH423,3471,394–

95Riverside County, CACA2,544,9161,376–

96Columbiana County, OHOH99,3771,355–

97Mecklenburg County, NCNC1,233,3831,347–

98Delaware County, PAPA580,9371,332–

99Brevard County, FLFL663,9821,304–

100Hamilton County, OHOH838,4181,294–

101Lawrence County, PAPA83,9111,293–

102Dane County, WIWI590,3751,250–

103El Paso County, COCO757,0401,201–

104Jefferson County, OHOH63,5971,195–

105Tarrant County, TXTX2,248,4661,186–

106Denver County, COCO740,6131,168–

107Collier County, FLFL417,1311,153–

108Frederick County, MDMD302,8831,151–

109Erie County, NYNY946,7411,148–

110Prince William County, VAVA502,9661,146–

111Pasco County, FLFL674,5161,127–

112Collin County, TXTX1,297,1791,121–

113Loudoun County, VAVA449,7491,119–

114Cobb County, GAGA793,3451,108–

115Montgomery County, OHOH539,5981,101–

116Passaic County, NJNJ531,6241,100–

117Monroe County, PAPA167,1791,090–

118Nassau County, NYNY1,398,9391,085–

119Gloucester County, NJNJ312,6381,065–

120Wood County, OHOH134,1761,065–

121Manatee County, FLFL468,2001,064–

122Washtenaw County, MIMI370,2141,063–

123Hunterdon County, NJNJ131,7811,059–

124Worcester County, MAMA888,5021,036–

125Lake County, FLFL456,068999–

126Marion County, ININ992,196969–

127Ashtabula County, OHOH96,713966–

128Kane County, ILIL525,757961–

129Travis County, TXTX1,389,670955–

130Arapahoe County, COCO673,820946–

131Bexar County, TXTX2,160,088944–

132Fulton County, GAGA1,098,791940–

133San Bernardino County, CACA2,224,091938–

134Seminole County, FLFL491,884933–

135New Castle County, DEDE588,026927–

136Cherokee County, GAGA299,273913–

137Volusia County, FLFL606,573903–

138Miami-Dade County, FLFL2,802,029901–

139Dallas County, TXTX2,661,397896–

140Onondaga County, NYNY466,584895–

141Greene County, PAPA33,885888–

142Harford County, MDMD266,446883–

143McHenry County, ILIL317,751878–

144Madison County, ILIL263,110875–

145Northumberland County, PAPA89,920874–

146Jefferson County, COCO580,451868–

147Kent County, MIMI675,232856–

148Blair County, PAPA119,541855–

149Ramsey County, MNMN541,623854–

150Howard County, MDMD339,183852–

151Denton County, TXTX1,069,346846–

152Multnomah County, OROR795,391842–

153Larimer County, COCO377,292832–

154Contra Costa County, CACA1,170,070828–

155Guernsey County, OHOH38,379828–

156Hamilton County, ININ387,036819–

157Sussex County, NJNJ148,063815–

158Horry County, SCSC427,551809–

159Sangamon County, ILIL194,170798–

160Hudson County, NJNJ735,033798–

161Dutchess County, NYNY300,708797–

162Jefferson County, PAPA43,255795–

163Camden County, NJNJ535,799789–

164Alameda County, CACA1,636,630772–

165Lebanon County, PAPA146,380771–

166Essex County, NJNJ896,379767–

167St. Lucie County, FLFL402,449762–

168Muskegon County, MIMI177,901762–

169Crawford County, PAPA81,792760–

170Ventura County, CACA830,851748–

171Erie County, OHOH73,296743–

172Arlington County, VAVA243,931741–

173Salt Lake County, UTUT1,220,916739–

174Douglas County, COCO399,396739–

175Marion County, FLFL442,660733–

176Monroe County, NYNY750,506733–

177San Francisco County, CACA826,079725–

178Kendall County, ILIL145,470723–

179Suffolk County, MAMA791,891720–

180Jackson County, MOMO732,994716–

181Genesee County, MIMI401,093715–

182Duval County, FLFL1,062,963710–

183Columbia County, PAPA66,193703–

184Butler County, OHOH400,128699–

185Racine County, WIWI198,919693–

186Virginia Beach, VAVA453,737692–

187Warren County, NJNJ112,953673–

188Jefferson County, KYKY795,222673–

189Wayne County, PAPA51,703658–

190Fulton County, NYNY52,216656–

191Belmont County, OHOH64,434655–

192Adams County, COCO554,668651–

193Monongalia County, WVWV107,991650–

194Greenville County, SCSC583,125645–

195Orange County, NYNY417,669640–

196Dakota County, MNMN457,710634–

197Pierce County, WAWA946,288629–

198Saratoga County, NYNY241,343629–

199Wayne County, OHOH116,758629–

200Ottawa County, MIMI308,459626–

201Knox County, TNTN511,453625–

202Boulder County, COCO328,560616–

203Gwinnett County, GAGA1,018,099598–

204Bernalillo County, NMNM667,601592–

205Allen County, ININ402,329589–

206Snohomish County, WAWA870,656584–

207Sacramento County, CACA1,618,460582–

208Atlantic County, NJNJ278,657582–

209Boone County, KYKY145,316580–

210East Baton Rouge Parish, LALA456,180579–

211Forsyth County, NCNC401,718574–

212St. Johns County, FLFL346,328573–

213Ingham County, MIMI289,709573–

214Carroll County, MDMD176,677572–

215Norfolk County, MAMA739,749564–

216Albany County, NYNY321,225559–

217Sussex County, DEDE277,140547–

218Kenosha County, WIWI168,448547–

219Brown County, WIWI275,803541–

220Schenectady County, NYNY162,581537–

221St. Clair County, MIMI160,486528–

222Essex County, MAMA826,653524–

223Baltimore, MDMD569,997520–

224Kalamazoo County, MIMI263,795518–

225LaPorte County, ININ111,294517–

226Putnam County, NYNY99,028511–

227Plymouth County, MAMA546,829507–

228Williamson County, TNTN272,061501–

229Susquehanna County, PAPA38,237499–

230Alexandria, VAVA160,662498–

231Fairfield County, OHOH169,752498–

232Lycoming County, PAPA112,587496–

233Chesterfield County, VAVA397,148495–

234Ulster County, NYNY183,330490–

235Chittenden County, VTVT169,115488–

236Hancock County, WVWV27,729484–

237Washington County, OROR611,708483–

238Fort Bend County, TXTX975,191480–

239Ottawa County, OHOH39,481479–

240Johnson County, KSKS636,906479–

241Washington County, WIWI139,238474–

242Anoka County, MNMN381,605473–

243Escambia County, FLFL333,834473–

244Sonoma County, CACA486,444471–

245Rockland County, NYNY357,397471–

246Livingston County, MIMI197,315471–

247Davidson County, TNTN745,904471–

248Niagara County, NYNY208,912469–

249Tioga County, NYNY47,453464–

250Cumberland County, MEME317,222463–

251Henrico County, VAVA342,775459–

252Berrien County, MIMI152,444458–

253Thurston County, WAWA304,261453–

254Warren County, OHOH257,181451–

255Polk County, FLFL874,790449–

256Charlotte County, FLFL217,212445–

257Brooke County, WVWV21,142445–

258Fayette County, KYKY329,751441–

259Worcester County, MDMD54,459439–

260Ohio County, WVWV40,496436–

261Spokane County, WAWA558,344435–

262Forsyth County, GAGA282,805434–

263Marin County, CACA253,694430–

264Hillsborough County, NHNH433,415428–

265Jefferson County, ALAL665,742420–

266Greene County, OHOH174,322420–

267Licking County, OHOH185,564418–

268Guilford County, NCNC562,234417–

269Sumter County, FLFL157,772410–

270York County, SCSC306,887410–

271Prince George's County, MDMD970,374408–

272Durham County, NCNC347,240407–

273Orange County, NCNC152,498403–

274Charleston County, SCSC436,200402–

275Flagler County, FLFL140,360401–

276Moore County, NCNC110,619400–

277Union County, NCNC267,674396–

278Anchorage, AKAK287,155394–

279Buncombe County, NCNC277,417389–

280Champaign County, ILIL209,972387–

281Pinal County, AZAZ539,380386–

282San Mateo County, CACA743,568383–

283Franklin County, PAPA160,652383–

284Monroe County, ININ143,345382–

285Livingston County, ILIL35,057380–

286Beaufort County, SCSC204,433379–

287Grundy County, ILIL54,052378–

288James City County, VAVA83,326375–

289Hampshire County, MAMA164,065374–

290Bell County, TXTX402,248374–

291St. Joseph County, ININ272,861371–

292Wyoming County, PAPA25,790371–

293Ada County, IDID546,141370–

294Richmond, VAVA237,257370–

295Clackamas County, OROR426,280368–

296St. Louis County, MNMN200,518367–

297Yavapai County, AZAZ252,552367–

298Richmond County, NYNY501,290364–

299Marion County, OHOH65,115364–

300Hampden County, MAMA464,338359–

301Pueblo County, COCO169,277358–

302Washoe County, NVNV509,386357–

303Androscoggin County, MEME116,487356–

304Montgomery County, TXTX781,194355–

305Madison County, ALAL433,516352–

306Elkhart County, ININ208,774351–

307McLean County, ILIL171,419351–

308Honolulu County, HIHI988,703350–

309Placer County, CACA442,081337–

310St. Charles County, MOMO426,499335–

311Kanawha County, WVWV172,381335–

312Albemarle County, VAVA118,356335–

313Spotsylvania County, VAVA155,388334–

314Monterey County, CACA433,729332–

315Hamilton County, TNTN390,833332–

316Union County, OHOH73,446331–

317Williamson County, TXTX752,827328–

318Calvert County, MDMD94,484328–

319El Dorado County, CACA192,323327–

320Citrus County, FLFL171,666325–

321Vigo County, ININ106,512325–

322Saginaw County, MIMI187,688322–

323Stafford County, VAVA170,803321–

324Oneida County, NYNY226,392321–

325Utah County, UTUT759,859319–

326New Hanover County, NCNC245,959316–

327Harrison County, MSMS217,136316–

328Cabarrus County, NCNC249,725313–

329Walworth County, WIWI106,127310–

330Santa Rosa County, FLFL211,115307–

331Adams County, PAPA107,594306–

332Santa Cruz County, CACA258,852305–

333Hancock County, OHOH75,034305–

334Winnebago County, ILIL283,674304–

335Harrison County, WVWV64,221302–

336Rutherford County, TNTN386,352300–

337Shiawassee County, MIMI67,681300–

338Gaston County, NCNC246,558297–

339Marshall County, WVWV29,159296–

340Berkeley County, WVWV139,522294–

341Alachua County, FLFL290,028290–

342Okaloosa County, FLFL221,810289–

343Hanover County, VAVA116,423288–

344Lane County, OROR381,584286–

345Richland County, OHOH124,893285–

346Tuscarawas County, OHOH92,373285–

347Macoupin County, ILIL43,748285–

348Van Buren County, MIMI76,071285–

349Venango County, PAPA49,346284–

350DeKalb County, GAGA774,394282–

351Cape May County, NJNJ93,390281–

352Kenton County, KYKY175,779281–

353Barnstable County, MAMA233,539280–

354Clermont County, OHOH216,977279–

355St. Louis, MOMO278,144276–

356St. Mary's County, MDMD116,692276–

357Athens County, OHOH63,197275–

358Providence County, RIRI678,179274–

359Clinton County, MIMI80,432273–

360Norfolk, VAVA231,013270–

361Warren County, KYKY149,375270–

362York County, VAVA71,374269–

363Chatham County, GAGA311,855269–

364Leon County, FLFL299,048268–

365Bristol County, MAMA593,640267–

366Pike County, PAPA62,808266–

367Johnson County, ININ174,262263–

368Tulsa County, OKOK698,782263–

369Boone County, ININ80,689261–

370McKean County, PAPA38,984259–

371Hernando County, FLFL221,701258–

372Dorchester County, SCSC178,397257–

373Kennebec County, MEME129,067257–

374Bronx County, NYNY1,406,332254–

375Marion County, OROR355,777254–

376Iredell County, NCNC211,798253–

377Oklahoma County, OKOK822,125253–

378Tippecanoe County, ININ190,456253–

379Benton County, WAWA221,722252–

380Warren County, PAPA37,038252–

381Monroe County, FLFL80,406251–

382Osceola County, FLFL481,718251–

383Sedgwick County, KSKS538,433251–

384St. Clair County, ILIL250,708250–

385Douglas County, NENE606,460249–

386Pulaski County, ARAR404,611248–

387Fauquier County, VAVA76,503247–

388Aiken County, SCSC181,515246–

389Douglas County, WIWI43,990245–

390Scott County, MNMN159,017243–

391Bradford County, PAPA59,600243–

392Polk County, IAIA516,546242–

393Brunswick County, NCNC174,702241–

394Rockingham County, NHNH324,077241–

395Martin County, FLFL166,272240–

396Greene County, NYNY47,238240–

397Cayuga County, NYNY74,365238–

398Midland County, MIMI83,754237–

399Herkimer County, NYNY59,219235–

400Alamance County, NCNC186,177234–

401Rensselaer County, NYNY160,510233–

402Floyd County, ININ82,153231–

403Washington County, MDMD157,731231–

404Richland County, SCSC434,956229–

405Dunn County, WIWI46,223228–

406Gratiot County, MIMI41,190228–

407Lincoln County, NCNC98,654224–

408Hendricks County, ININ193,510222–

409Ashland County, OHOH52,523222–

410Marathon County, WIWI139,432222–

411Weld County, COCO378,426219–

412DeKalb County, ILIL101,835217–

413Bay County, FLFL204,479215–

414Clark County, WAWA532,119215–

415Elk County, PAPA29,926215–

416Lancaster County, NENE334,049214–

417Shelby County, TNTN910,226212–

418Lee County, ALAL189,881212–

419Chemung County, NYNY80,415208–

420Tompkins County, NYNY104,047208–

421Deschutes County, OROR213,072207–

422Silver Bow County, MTMT36,118206–

423Jasper County, ININ33,894204–

424Bay County, MIMI102,123201–

425Washington County, RIRI129,795201–

426Peoria County, ILIL178,553201–

427Clinton County, PAPA37,870201–

428Jefferson County, MOMO233,132199–

429Cascade County, MTMT85,029199–

430Chesapeake, VAVA255,332198–

431Chaffee County, COCO20,831198–

432Calhoun County, MIMI133,408197–

433Portage County, WIWI71,943197–

434Washington County, MNMN286,895196–

435Manassas, VAVA44,332195–

436Clarion County, PAPA36,680195–

437Huron County, OHOH58,250194–

438Santa Barbara County, CACA442,065193–

439Bennington County, VTVT36,630192–

440Clay County, MOMO265,032192–

441Sumner County, TNTN215,538191–

442Hall County, GAGA226,568189–

443Bayfield County, WIWI16,787189–

444Eaton County, MIMI109,581189–

445Muskingum County, OHOH87,014189–

446Doña Ana County, NMNM229,091189–

447San Joaquin County, CACA823,815188–

448Sheboygan County, WIWI118,047187–

449Kankakee County, ILIL105,525186–

450Pennington County, SDSD116,792186–

451Gallatin County, MTMT128,740185–

452Craven County, NCNC105,025183–

453Charlottesville, VAVA44,388182–

454Minnehaha County, SDSD212,691182–

455Scott County, IAIA175,259180–

456Wicomico County, MDMD106,899179–

457Indian River County, FLFL172,799176–

458Solano County, CACA455,376176–

459San Luis Obispo County, CACA282,367175–

460Coweta County, GAGA160,240175–

461Penobscot County, MEME157,967172–

462Oconee County, SCSC83,775172–

463Monroe County, MIMI156,004172–

464Outagamie County, WIWI195,894171–

465Comal County, TXTX209,166170–

466Oldham County, KYKY70,986169–

467Roanoke County, VAVA97,150168–

468Kitsap County, WAWA283,374168–

469Chautauqua County, NYNY124,126168–

470Allegan County, MIMI123,188168–

471Henderson County, NCNC122,375167–

472Sandusky County, OHOH58,655167–

473Ionia County, MIMI66,557166–

474Warren County, VAVA42,740165–

475Miami County, OHOH112,634165–

476Anderson County, SCSC219,930165–

477Olmsted County, MNMN166,731164–

478Merrimack County, NHNH158,078161–

479Nassau County, FLFL106,879160–

480Oswego County, NYNY118,569160–

481Onslow County, NCNC217,175160–

482Linn County, IAIA232,028160–

483Coconino County, AZAZ144,368160–

484Marquette County, MIMI68,064160–

485Humboldt County, CACA131,647159–

486Price County, WIWI13,988159–

487Allegany County, MDMD66,848159–

488Jackson County, ALAL54,281158–

489St. Tammany Parish, LALA279,108156–

490Warren County, NYNY65,020155–

491Fulton County, OHOH41,853155–

492Lexington County, SCSC317,588155–

493Rock County, WIWI166,472154–

494Huntingdon County, PAPA43,001152–

495Caroline County, VAVA34,413152–

496Cleveland County, OKOK303,973152–

497Isabella County, MIMI64,691151–

498Bedford County, PAPA47,480151–

499Tazewell County, ILIL130,049150–

500Carver County, MNMN114,379149–

SHOWING 1–500 OF 1,804

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

Frequently asked

Which county has the highest slovak population?

Allegheny County, Pennsylvania ranks #1 with 40,190 (2020 American Community Survey).

What are the top 5 counties by slovak population?

Allegheny County, Pennsylvania, Cuyahoga County, Ohio, Westmoreland County, Pennsylvania, Luzerne County, Pennsylvania, Mahoning County, Ohio.

How many counties are in this ranking?

1,804 counties qualify after filtering for population minimums and data availability. The ranking covers 2020 ACS 5-year data.

How is slovak population measured?

Number of residents who are Slovak ancestry (Ancestry, ACS detailed tables). Source: US Census Bureau, American Community Survey 5-year estimates (2020).