CensusEasy
RANKING · 2020 CENSUS · 500 SHOWN OF 5,159

Largest Czech population, US cities · 2020

US cities ranked by the number of residents who are Czech ancestry, from the 2020 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. Omaha, Nebraska leads at 16,060. 5,159 cities qualify in total. Cities with fewer than 5,000 residents are excluded. Texas carries 5 of the top 25 entries.

Czech Americans: full group profile →
All statesPop > 5KAll rankings
SAME RANKING BYCountiesStatesMetros
RELATEDLargest American populationHighest American population shareLargest Arab populationHighest Arab population shareLargest Egyptian populationHighest Egyptian population share
YEAR201020202024
Filter by state
RANKPLACESTATEPOPCZECH POPULATIONVS 2010
USUnited States0.4% of US population331,449,2811,329,130
01Omaha, NENE488,79716,060−2%
02Lincoln, NENE301,52213,289−16%
03New York, NYNY8,584,62912,161−5%
04Chicago, ILIL2,731,58510,534−17%
05Houston, TXTX2,397,3159,725−16%
06Austin, TXTX1,002,6328,293+8%
07Los Angeles, CACA3,869,0896,236−9%
08Cedar Rapids, IAIA137,9356,019−30%
09Phoenix, AZAZ1,665,4815,625−9%
10Dallas, TXTX1,329,4915,568+21%
11Minneapolis, MNMN430,3244,624−12%
12San Antonio, TXTX1,548,4224,619−26%
13Seattle, WAWA784,7774,124+7%
14Portland, OROR635,1093,866+11%
15Denver, COCO740,6133,712+3%
16San Diego, CACA1,406,1063,576−30%
17Madison, WIWI286,2333,554+25%
18Oklahoma City, OKOK719,8493,512+18%
19Fort Worth, TXTX1,028,1173,465+8%
20Milwaukee, WIWI562,4073,051−21%
21Sioux Falls, SDSD213,7482,908+11%
22San Francisco, CACA826,0792,881−4%
23Colorado Springs, COCO494,7432,533−16%
24Iowa City, IAIA76,2292,507+12%
25Washington, DCDC693,6452,476+78%
26St. Paul, MNMN306,6842,400−35%
27Cleveland, OHOH363,6082,350−17%
28Columbus, OHOH938,3962,303−23%
29Naperville, ILIL153,1142,208−38%
30Columbus, NENE25,2482,206+31%
31Marion, IAIA42,7322,187+23%
32Kansas City, MOMO521,2202,121+29%
33Philadelphia, PAPA1,574,2812,083−6%
34College Station, TXTX127,4722,059−3%
35Scottsdale, AZAZ243,0062,023−14%
36Temple, TXTX98,4122,001+36%
37Corpus Christi, TXTX317,2471,895−21%
38Allen, TXTX113,4471,856+226%
39Albuquerque, NMNM556,5881,844+12%
40Manitowoc, WIWI34,6711,827−31%
41Arlington, TXTX402,1341,812−25%
42Parma, OHOH78,5811,781−20%
43Des Moines, IAIA212,0861,761−13%
44Waco, TXTX147,7881,739+40%
45Charlotte, NCNC964,7841,720+4%
46Rapid City, SDSD80,5891,697+57%
47Green Bay, WIWI106,6751,684−26%
48The Woodlands, TXTX121,0021,624+30%
49Downers Grove, ILIL50,3651,611−29%
50Bellevue, NENE64,8631,609−31%
51Mesa, AZAZ513,6561,583−23%
52Victoria, TXTX66,5001,563−51%
53Fort Collins, COCO171,5001,554−4%
54Fargo, NDND136,2751,507−1%
55Pittsburgh, PAPA307,6321,494−11%
56Bolingbrook, ILIL74,8031,488+38%
57Owatonna, MNMN26,6331,482+9%
58Fremont, NENE28,3501,477−24%
59Tucson, AZAZ548,3711,471−38%
60Rochester, MNMN124,2921,467−7%
61Virginia Beach, VAVA453,7371,455−7%
62Arvada, COCO122,9011,421+68%
63Sugar Land, TXTX107,7261,421+48%
64Wichita, KSKS400,9871,410−43%
65Pearland, TXTX129,9301,401+39%
66Grand Forks, NDND60,3651,393+24%
67Henderson, NVNV353,2891,392+18%
68Gilbert, AZAZ287,2851,387+67%
69Kearney, NENE34,7821,386+1%
70Tulsa, OKOK416,2091,386+42%
71Nashville, TNTN721,0741,352+12%
72Jacksonville, FLFL1,017,6891,336−33%
73Las Vegas, NVNV679,8171,322−43%
74Lakeville, MNMN79,2701,318+25%
75San Jose, CACA989,8141,317−20%
76La Crosse, WIWI50,7841,292+12%
77Eagan, MNMN67,1091,272−12%
78Boston, MAMA672,9731,265+8%
79Indianapolis, ININ901,1161,261−15%
80New Prague, MNMN8,2381,256−13%
81Joliet, ILIL152,2411,240−16%
82Cary, NCNC183,5821,237+93%
83Round Rock, TXTX141,2821,237+14%
84Overland Park, KSKS203,6771,235−28%
85Georgetown, TXTX106,9071,231+70%
86St. Louis, MOMO278,1441,225−26%
87Boulder, COCO105,6891,219−3%
88Bryan, TXTX91,9961,205−14%
89Aurora, ILIL181,5051,201−16%
90Tinley Park, ILIL55,1401,185−16%
91Anchorage, AKAK287,1551,177−34%
92Lakewood, COCO156,9271,174+26%
93Arlington, VAVA236,2541,174+9%
94Plano, TXTX293,0281,170−13%
95Oakland, CACA440,8381,137+62%
96Aurora, COCO410,0531,118−26%
97Woodbury, MNMN81,5581,101+36%
98Grand Island, NENE53,9431,101−41%
99St. Petersburg, FLFL264,0331,097−10%
100Tampa, FLFL413,5541,094+41%
101Raleigh, NCNC506,3061,085+13%
102Huntington Beach, CACA191,4511,083+1%
103Baltimore, MDMD569,9971,083−35%
104Berwyn, ILIL55,0011,082−41%
105Eugene, OROR178,6181,081+11%
106Strongsville, OHOH45,6291,074−13%
107Long Beach, CACA450,4691,071+25%
108Darien, ILIL22,0321,062−17%
109Faribault, MNMN25,0401,050+37%
110Bloomington, MNMN89,0341,047−26%
111Westmont, ILIL24,1551,033−9%
112Lawrence, KSKS96,3671,032+11%
113Leander, TXTX91,1321,031+87%
114Temecula, CACA114,8651,018+137%
115Caledonia, WIWI25,229998−1%
116Ankeny, IAIA77,833987+40%
117Dickinson, NDND25,870972−14%
118Denton, TXTX169,431972+28%
119Bismarck, NDND77,963971+19%
120Centennial, COCO108,658963−16%
121Appleton, WIWI75,452963−9%
122Eden Prairie, MNMN63,075957−4%
123Reno, NVNV283,621953+13%
124Wahoo, NENE5,023944−7%
125Taylor, TXTX18,402944−21%
126Woodridge, ILIL34,028933−13%
127Akron, OHOH189,691931+1%
128Peoria, AZAZ200,881929−0%
129Council Bluffs, IAIA62,680924−7%
130Olathe, KSKS150,025914−15%
131Chandler, AZAZ278,748913−35%
132Brookfield, ILIL18,879911−45%
133Boise City, IDID238,429901−47%
134Orland Park, ILIL57,954895−23%
135Lubbock, TXTX273,071891−30%
136Atlanta, GAGA529,110883+16%
137Tempe, AZAZ190,571874+11%
138Oshkosh, WIWI67,460874+53%
139Brunswick, OHOH35,114873+6%
140Thornton, COCO147,766872+6%
141Louisville, KYKY641,962871+3%
142Apple Valley, MNMN55,248866+18%
143Fayetteville, ARAR106,623865+243%
144Maple Grove, MNMN73,893854−19%
145St. Louis Park, MNMN50,027853+17%
146Ennis, TXTX25,694851−10%
147Wheaton, ILIL54,065849+7%
148Antigo, WIWI8,060846+28%
149Palatine, ILIL65,842842+30%
150North Richland Hills, TXTX70,843842+50%
151Chaska, MNMN30,513829+52%
152La Vista, NENE16,543829−16%
153Murrieta, CACA114,124825+374%
154Schaumburg, ILIL77,249819−29%
155Coon Rapids, MNMN64,193819+7%
156St. Cloud, MNMN72,647814−22%
157New Braunfels, TXTX122,492813+8%
158El Paso, TXTX683,012805+42%
159Sacramento, CACA536,449804−31%
160North Royalton, OHOH30,936798−37%
161Little Rock, ARAR206,427797+106%
162League City, TXTX119,905797−8%
163Cape Coral, FLFL236,264795−5%
164Farmington, MNMN25,425791+150%
165De Pere, WIWI25,590790+72%
166Papillion, NENE25,127786−10%
167Frisco, TXTX236,955786−19%
168Eau Claire, WIWI72,465785−39%
169Fishers, ININ104,812780+52%
170Spokane, WAWA230,783778−30%
171Duluth, MNMN88,330777−21%
172Durham, NCNC305,561776+100%
173Cedar Falls, IAIA41,240775+29%
174Waterloo, IAIA66,919773−34%
175Fresno, CACA555,549770−7%
176Clearwater, FLFL114,364767+56%
177Richmond, VAVA237,257767+114%
178Homer Glen, ILIL24,873765−0%
179El Campo, TXTX12,142764−28%
180Davenport, IAIA100,358759−30%
181Alexandria, VAVA160,662756+17%
182Tacoma, WAWA229,816751−18%
183Belton, TXTX25,964750+207%
184Elmhurst, ILIL46,111749−23%
185Racine, WIWI77,908743−43%
186Seven Hills, OHOH11,464742−2%
187Costa Mesa, CACA108,881741+39%
188Des Plaines, ILIL58,772739−0%
189Blaine, MNMN76,603737−38%
190Carrollton, TXTX134,562730−5%
191McKinney, TXTX236,001729−23%
192Two Rivers, WIWI11,222729−45%
193West Allis, WIWI60,119729−32%
194Cincinnati, OHOH314,367727+3%
195Villa Park, ILIL21,888717+22%
196Crystal Lake, ILIL42,288716+12%
197Hillsboro, OROR111,126714+37%
198Amarillo, TXTX205,130712−3%
199Northfield, MNMN21,992710+34%
200Richardson, TXTX118,542710+29%
201Sioux City, IAIA86,356706−19%
202Glendale, AZAZ260,572705−18%
203Manhattan, KSKS54,673703+43%
204Toledo, OHOH263,423702−16%
205North Olmsted, OHOH31,542697−29%
206Salt Lake City, UTUT218,428697−2%
207Waukesha, WIWI70,872696−37%
208Conroe, TXTX119,564693+32%
209Minnetonka, MNMN53,969692−46%
210Burnsville, MNMN65,244688−37%
211Prior Lake, MNMN28,140688+17%
212Plainfield, ILIL50,043687−38%
213Cottage Grove, MNMN43,604683+27%
214Plymouth, MNMN78,942680−31%
215Oswego, ILIL39,948679+51%
216Ramsey, MNMN29,624676+133%
217Yankton, SDSD15,816670−11%
218Cicero, ILIL81,858666−23%
219Highlands Ranch, COCO102,257663−29%
220Coralville, IAIA23,960661+46%
221Santa Clarita, CACA228,430655+9%
222Billings, MTMT121,239652−20%
223Norfolk, NENE26,677652−45%
224Northbrook, ILIL34,744649+330%
225Ann Arbor, MIMI122,233642−24%
226West Des Moines, IAIA74,224635+2%
227Westminster, COCO116,182632−21%
228Pflugerville, TXTX68,316632−34%
229San Angelo, TXTX100,640630−25%
230Holmen, WIWI12,105630+347%
231Wausau, WIWI40,188628+47%
232Loveland, COCO81,387626+6%
233Oak Park, ILIL52,823625−30%
234Lombard, ILIL44,399622−44%
235Redondo Beach, CACA67,281620+59%
236Evanston, ILIL76,380620−2%
237Mount Pleasant, WIWI28,253620−7%
238Hutto, TXTX46,048618+47%
239Cedar Park, TXTX79,032616−20%
240Stevens Point, WIWI26,377612+35%
241Edina, MNMN54,356611+12%
242Elgin, ILIL115,476605−38%
243La Grange Park, ILIL13,453602−38%
244Golden Valley, MNMN21,325600+92%
245Rosenberg, TXTX42,701591−23%
246Rosemount, MNMN31,881583+109%
247Keller, TXTX46,078580+6%
248River Falls, WIWI17,916577+5%
249Memphis, TNTN609,647575+22%
250Oak Forest, ILIL26,792574+8%
251Shakopee, MNMN49,366574−20%
252Carlsbad, CACA112,260573−3%
253Janesville, WIWI66,929573−18%
254Pecan Grove, TXTX24,272571−11%
255Vancouver, WAWA199,698570−39%
256Western Springs, ILIL13,588568+26%
257Salina, KSKS46,094568−15%
258Lakewood, OHOH49,027566−25%
259Urbandale, IAIA48,570564−11%
260Garden City, NYNY23,043562+1461%
261Greenfield, WIWI37,159556−2%
262Pasadena, TXTX148,539555−56%
263Grand Rapids, MIMI201,183553−17%
264Topeka, KSKS125,795552−25%
265Seward, NENE7,892552−37%
266The Villages, FLFL83,498551+37%
267Enterprise, NVNV240,464551+16%
268Thousand Oaks, CACA122,230548−17%
269Bartlett, ILIL40,855548−46%
270Lonsdale, MNMN5,117548+18%
271Hastings, NENE25,121548−44%
272Wichita Falls, TXTX101,951548−19%
273Horizon West, FLFL67,416546
274Springfield, MOMO169,847545−31%
275Buda, TXTX16,166544+737%
276Oak Creek, WIWI38,296544+52%
277Spokane Valley, WAWA108,405543+10%
278Oak Lawn, ILIL56,450537−47%
279Brooklyn Park, MNMN83,543537−33%
280Orlando, FLFL333,888531+33%
281Arlington Heights, ILIL76,216530−54%
282Roseville, MNMN35,663529−33%
283Yoakum, TXTX5,900529+11%
284Park Ridge, ILIL38,463528+27%
285West Bend, WIWI32,268527−12%
286Irving, TXTX257,076526−46%
287Shawnee, KSKS69,848524+5%
288North Liberty, IAIA21,976523+15%
289North Ridgeville, OHOH37,786523−8%
290Norman, OKOK130,943523−37%
291Kansas City, KSKS157,805522+55%
292Lexington, KYKY329,751522+9%
293Mankato, MNMN46,529521−25%
294Palmdale, CACA161,845520+128%
295Bellaire, TXTX17,434520+159%
296Corona, CACA161,734519+81%
297Glenview, ILIL47,711519+13%
298Fremont, CACA226,442516+121%
299Broadview Heights, OHOH19,755516−11%
300Cuyahoga Falls, OHOH50,975516+46%
301Mission Viejo, CACA90,484510+6%
302Santa Monica, CACA90,082509−15%
303Kirkland, WAWA97,410509−0%
304Streamwood, ILIL38,277508+44%
305North Riverside, ILIL7,161507−30%
306Ames, IAIA68,220507−57%
307Stamford, CTCT139,535502−5%
308Bellevue, WAWA154,193502−17%
309Carpentersville, ILIL37,045501+158%
310Alexandria, MNMN15,045501+149%
311St. Charles, ILIL33,594497+9%
312San Mateo, CACA103,337496−0%
313Port Charlotte, FLFL66,133495+32%
314Dayton, OHOH136,688492+113%
315Roselle, ILIL22,756491+12%
316Fort Wayne, ININ275,203491−41%
317Lenexa, KSKS60,506490−12%
318Burien, WAWA51,859489+179%
319Mesquite, TXTX150,693486−17%
320Kenosha, WIWI99,239486−43%
321Mason City, IAIA26,853483−32%
322Greensboro, NCNC308,667483−8%
323Bellevue, WIWI16,776483+138%
324Parker, COCO65,985482+114%
325Worcester, MAMA213,862480+58%
326Auburn, WAWA86,301480+30%
327Lisle, ILIL23,432479−36%
328Mount Prospect, ILIL55,395478−42%
329Westlake, OHOH33,904478−12%
330Midland, TXTX147,615478+27%
331Garland, TXTX249,625478−54%
332Casper, WYWY58,771474−29%
333Broken Arrow, OKOK124,991473+24%
334Pierre, SDSD13,848473+2%
335Littleton, COCO46,246472+9%
336Romeoville, ILIL41,281472−3%
337Bettendorf, IAIA40,710472+30%
338Charleston, SCSC159,423472+20%
339Muskego, WIWI25,602471+74%
340Mentor, OHOH47,010470−30%
341Maple Heights, OHOH22,902470−22%
342Orange, CACA138,365467+15%
343Plattsmouth, NENE6,955467+48%
344Colleyville, TXTX25,727466+77%
345Norfolk, VAVA231,013466+6%
346Pacifica, CACA36,890464+404%
347Bozeman, MTMT58,814464+13%
348Austin, MNMN26,689463−19%
349Moorhead, MNMN46,533463−9%
350Cambridge, MAMA122,588462−17%
351Chattanooga, TNTN194,144462+282%
352San Marcos, TXTX77,830461−44%
353Surprise, AZAZ175,304460−10%
354Sterling Heights, MIMI133,931460−1%
355Garfield Heights, OHOH28,790460−50%
356Newport Beach, CACA81,977459+29%
357Carol Stream, ILIL39,315459−19%
358Junction City, KSKS22,583458+377%
359Riverhead, NYNY14,936458+1017%
360Casas Adobes, AZAZ72,059457+22%
361South St. Paul, MNMN20,532457+9%
362Chanhassen, MNMN25,748457−35%
363Nashua, NHNH92,435457−4%
364New Berlin, WIWI39,953455+15%
365Bel Air North, MDMD31,302454+24%
366Enid, OKOK50,297454−35%
367South Hill, WAWA68,025451+105%
368Concord, CACA123,261449+18%
369Mehlville, MOMO29,805449−15%
370Berkeley, CACA121,911448−11%
371Geneva, ILIL21,138445−19%
372Towson, MDMD58,679444−16%
373Owosso, MIMI14,437444−46%
374Burbank, ILIL28,578441−27%
375Carmel, ININ105,634441+31%
376Columbia, MOMO130,851441−34%
377Bel Air South, MDMD58,137440+5%
378Erie, PAPA91,838439−30%
379Carmichael, CACA76,948438+62%
380Savage, MNMN32,970437−43%
381Longview, TXTX83,236437−23%
382Flagstaff, AZAZ77,260436+31%
383Citrus Heights, CACA86,348436+50%
384Sunnyvale, CACA156,577435−6%
385Longmont, COCO100,109434−32%
386Clifton, NJNJ91,127433+40%
387Irvine, CACA318,764432−44%
388Glendale, CACA187,160431+45%
389La Grange, ILIL15,935429−41%
390Beaverton, OROR97,842429+21%
391St. Charles, MOMO72,561427+19%
392Lee's Summit, MOMO107,514426+33%
393Missoula, MTMT78,903424+1%
394Riverside, ILIL8,939422−42%
395Rockford, ILIL147,384422−33%
396Rothschild, WIWI5,627422+62%
397La Mesa, CACA59,914421+45%
398Wheat Ridge, COCO32,081420+97%
399Crystal, MNMN22,239420−1%
400Kent, WAWA134,871420+111%
401New Lenox, ILIL28,893419−41%
402Macon-Bibb County, GAGA157,556418
403Crown Point, ININ35,616418+16%
404Spring Valley, NVNV219,187418−36%
405Walnut Creek, CACA70,012416+60%
406Laguna Beach, CACA22,391414+452%
407Lakewood, NJNJ69,585414+73%
408Fullerton, CACA138,675413+114%
409Ocoee, FLFL51,932413+600%
410Sealy, TXTX7,937413+16%
411Neenah, WIWI27,638413+19%
412Anaheim, CACA341,008412−39%
413Aberdeen, SDSD27,961410+32%
414Riverside, CACA323,057409−39%
415Richfield, MNMN36,593409−13%
416Pleasanton, CACA74,556407+49%
417Rogers, MNMN15,606407+415%
418Beatrice, NENE12,318406−40%
419Rockwall, TXTX53,980406+46%
420Mountain View, CACA85,438405+224%
421Fond du Lac, WIWI44,541403−12%
422Ellicott City, MDMD75,257402+53%
423Brenham, TXTX19,957402+34%
424Stephenville, TXTX21,793402+17%
425Winona, MNMN26,530401+4%
426Bloomington, ININ83,307400−16%
427Rapid Valley, SDSD6,975400+274%
428North Platte, NENE22,524398−39%
429Hibbing, MNMN15,823396+205%
430Wadsworth, OHOH24,720396+125%
431Royal Oak, MIMI57,583395−9%
432Alvin, TXTX30,115395+46%
433Normal, ILIL53,275394−13%
434Columbia, SCSC147,035394+60%
435Greeley, COCO115,073393−34%
436Grand Prairie, TXTX209,434393−26%
437Algonquin, ILIL30,824392−0%
438Cary, ILIL17,932391+31%
439Independence, MOMO121,675390+20%
440Simi Valley, CACA124,861389−24%
441Hutchinson, MNMN14,655389−18%
442Oceanside, CACA170,483387−43%
443San Buenaventura (Ventura), CACA109,914386−1%
444Bloomington, ILIL78,804386−12%
445Wayne, NENE6,338386+25%
446Maricopa, AZAZ78,362385+348%
447Elk Grove, ILIL31,885385−33%
448Lansing, MIMI113,884385−11%
449Sanger, TXTX10,238385+305%
450Seabrook, TXTX13,974384+75%
451Franklin Farm, VAVA18,736383+335%
452Louisville, COCO20,581382+14%
453Bonita Springs, FLFL57,634382+30%
454Hiawatha, IAIA7,432382−30%
455Bulverde, TXTX7,337382+1264%
456Huntsville, ALAL233,627381+8%
457Burbank, CACA102,988381+41%
458Wauwatosa, WIWI48,649380−49%
459Castle Pines, COCO15,583377+798%
460Gainesville, FLFL148,671377−3%
461Athens, GAGA128,612376+17%
462New Orleans, LALA362,154375−14%
463Andover, MNMN33,874375−36%
464Cheyenne, WYWY66,507373−39%
465Roswell, GAGA91,505372+11%
466DeKalb, ILIL40,467372+1%
467Toms River, NJNJ94,956371−43%
468Westchester, ILIL16,300370−56%
469Chesterfield, MOMO49,309370+3%
470Brookings, SDSD25,355370+4%
471Sienna, TXTX24,992370
472Fitchburg, WIWI34,615370+35%
473Sun Prairie, WIWI39,227369+4%
474Broomfield, COCO79,174367−49%
475Aurora, OHOH18,014367−20%
476Allouez, WIWI13,838367−17%
477Oakton, VAVA36,528364+355%
478West Fargo, NDND41,175363−14%
479Cinco Ranch, TXTX18,611363+171%
480Paradise, NVNV185,913361−66%
481Port Lavaca, TXTX11,060360+22%
482Huntsville, TXTX49,088359−40%
483Lake Zurich, ILIL19,868357−0%
484Franklin, WIWI36,687357−13%
485Springfield, OROR61,431356+84%
486Castle Rock, COCO83,815355−39%
487Fridley, MNMN30,829355−40%
488Parkville, MOMO9,093355+1514%
489Springfield, ILIL112,989354−20%
490Chalco, NENE10,595354−43%
491Santa Cruz, CACA61,797353+5%
492Newport News, VAVA183,230353−36%
493Marshalltown, IAIA27,536352−37%
494Concord, NCNC114,598351+132%
495Verona, WIWI16,821350+56%
496Knoxville, TNTN202,021349−11%
497Rocky River, OHOH21,397348−49%
498Mount Pleasant, SCSC95,469348+18%
499Middleton, WIWI23,115348−4%
500Honolulu, HIHI341,868347+0%
SHOWING 1–500 OF 5,159
1211
Download CSV (full list, 5,159 rows)

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

Frequently asked

Which city has the highest czech population?

Omaha, Nebraska ranks #1 with 16,060 (2020 Decennial Census).

What are the top 5 cities by czech population?

Omaha, Nebraska, Lincoln, Nebraska, New York, New York, Chicago, Illinois, Houston, Texas.

How many cities are in this ranking?

5,159 cities qualify after filtering for population minimums and data availability (minimum 5,000 residents). The ranking covers 2020 Decennial Census data.

How is czech population measured?

Number of residents who are Czech ancestry (Ancestry, ACS detailed tables). Source: US Census Bureau, 2020 Decennial Census.