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Most densely populated counties

Population per square mile of land, using the latest Census Bureau estimate and Gazetteer land area. Small urban counties and independent cities lead because a large population shares little land.

Ranks 201–300

Vintage 2025 population estimates · 2026 Gazetteer land area · 3,222 county equivalents · page 3 of 33

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What this part of the ranking shows

This page runs from Erie County, New York at 908 people per mi² to Hidalgo County, Texas at 587 people per mi². The 100 entries represent 29 state-level jurisdictions. Puerto Rico has the most entries on this page (23).

Rank numbers continue across pages and describe the full selected ranking. They are not state ranks. Start at rank 1 for the leading entries, or open a county profile for its state rank and median comparisons.

Most densely populated counties, ranks 201 through 300. Population is the July 1, 2025 estimate; density is per square mile of land.
RankCounty / equivalentStatePopulationPer mi²Land mi²
201Erie CountyNew York946,7419081,042.8
202Hatillo MunicipioPuerto Rico37,81090641.7
203Anoka CountyMinnesota381,605904422
204Pasco CountyFlorida674,516903746.7
205Polk CountyIowa516,546902572.7
206Mayagüez MunicipioPuerto Rico68,90588877.6
207Northampton CountyPennsylvania324,411877369.8
208Sarpy CountyNebraska208,303875238
209Loudoun CountyVirginia449,749872515.7
210Guilford CountyNorth Carolina562,234870646
211El Paso CountyTexas877,8588661,013.5
212Poquoson cityVirginia13,29286615.4
213Sarasota CountyFlorida479,958863556.1
214Barranquitas MunicipioPuerto Rico29,50986234.2
215Manatí MunicipioPuerto Rico38,41385944.7
216Butler CountyOhio400,128858466.5
217Will CountyIllinois712,253852835.9
218Clark CountyWashington532,119847628.5
219Washington CountyOregon611,708845724.3
220Arapahoe CountyColorado673,820845797.9
221Henry CountyGeorgia264,922831318.7
222Plymouth CountyMassachusetts546,829830658.5
223Emporia cityVirginia5,4478226.6
224Dakota CountyMinnesota457,710814562.6
225Corozal MunicipioPuerto Rico34,53181242.5
226Newport CountyRhode Island83,051811102.4
227Galax cityVirginia6,6708108.2
228Palm Beach CountyFlorida1,575,7268021,964.3
229Kent CountyMichigan675,232795849.5
230Schenectady CountyNew York162,581794204.7
231Aibonito MunicipioPuerto Rico24,74679131.3
232Vanderburgh CountyIndiana181,995780233.4
233San Diego CountyCalifornia3,282,2487794,210.9
234Isabela MunicipioPuerto Rico42,93877755.3
235Cayey MunicipioPuerto Rico40,02777151.9
236Douglas CountyGeorgia154,293771200.1
237St. Charles CountyMissouri426,499761560.3
238Aguas Buenas MunicipioPuerto Rico22,83876030.1
239Juana Díaz MunicipioPuerto Rico45,85376060.4
240Jefferson CountyColorado580,451759764.4
241Waukesha CountyWisconsin417,210759549.7
242Rockdale CountyGeorgia98,416758129.8
243Chesapeake cityVirginia255,332754338.5
244Hampden CountyMassachusetts464,338753617
245Montgomery CountyTexas781,1947501,042.2
246Florida MunicipioPuerto Rico11,37174815.2
247Moca MunicipioPuerto Rico37,56274650.4
248Washington CountyMinnesota286,895746384.8
249Chester CountyPennsylvania557,116742750.6
250Greenville CountySouth Carolina583,125742785.9
251Río Grande MunicipioPuerto Rico44,79973960.6
252Morovis MunicipioPuerto Rico28,17072438.9
253Hamilton CountyTennessee390,833721542.2
254Chatham CountyGeorgia311,855721432.8
255Kitsap CountyWashington283,374717395.1
256Cherokee CountyGeorgia299,273711421
257Camuy MunicipioPuerto Rico32,69170446.4
258St. Lucie CountyFlorida402,449704571.9
259San Lorenzo MunicipioPuerto Rico37,27570253.1
260Gaston CountyNorth Carolina246,558693355.8
261Cabarrus CountyNorth Carolina249,725691361.3
262York CountyVirginia71,374682104.7
263Arecibo MunicipioPuerto Rico85,539679126
264Williamson CountyTexas752,8276751,115.9
265Clay CountyMissouri265,032666397.7
266Luquillo MunicipioPuerto Rico17,19066625.8
267Cabo Rojo MunicipioPuerto Rico46,58066270.4
268Lorain CountyOhio323,219659490.5
269Brevard CountyFlorida663,9826541,015
270Stark CountyOhio373,771650574.9
271Comerío MunicipioPuerto Rico18,44564928.4
272Fayette CountyGeorgia125,156643194.7
273Warren CountyOhio257,181641401.4
274Richmond CountyGeorgia206,559637324.4
275Stafford CountyVirginia170,803636268.5
276Bibb CountyGeorgia157,556632249.4
277Campbell CountyKentucky95,441631151.3
278Manatee CountyFlorida468,200630742.8
279Genesee CountyMichigan401,093630636.9
280Rutherford CountyTennessee386,352624619.5
281Añasco MunicipioPuerto Rico24,44962239.3
282Kenosha CountyWisconsin168,448620271.8
283Barrow CountyGeorgia99,773619161.1
284Albany CountyNew York321,225614522.9
285Allen CountyIndiana402,329612657.1
286Paulding CountyGeorgia190,996611312.4
287Harford CountyMaryland266,446610437.1
288Sabana Grande MunicipioPuerto Rico22,05560736.3
289Burlington CountyNew Jersey481,439602799.3
290Onondaga CountyNew York466,584599778.4
291Jefferson CountyAlabama665,7425991,111.6
292Racine CountyWisconsin198,919598332.6
293Lancaster CountyPennsylvania563,159597943.9
294St. Joseph CountyIndiana272,861596457.8
295Villalba MunicipioPuerto Rico21,13359335.6
296Barnstable CountyMassachusetts233,539592394.2
297San Joaquin CountyCalifornia823,8155921,392.3
298Boone CountyKentucky145,316590246.3
299Worcester CountyMassachusetts888,5025881,510.7
300Hidalgo CountyTexas921,5495871,571.2

Read the differences behind ranks 201–300

The median density among these 100 entries is 741 people per mi². The first and last entries span 321 people per square mile. This median describes the entries on this page, not the full national dataset. Pagination is a browsing boundary, not a distinct geographic region.

Adjacent ranks can differ by a handful of residents or by many thousands. Open a county profile for its population trend since 2020, land area, and state comparisons.

Where the entries on this page are located

  • Puerto Rico23 entries · 23% of this page
  • Georgia10 entries · 10% of this page
  • Virginia7 entries · 7% of this page
  • Florida6 entries · 6% of this page
  • Massachusetts4 entries · 4% of this page
  • New York4 entries · 4% of this page

The remaining 23 jurisdictions contribute 46 entries. The list above shows the six most represented, with alphabetical ordering when counts tie.

These counts describe representation in this slice of the ranking. They do not measure a state’s share of national land or population. Compare the first and last county equivalents on this page to inspect land, water, and total area separately.

Read the geographic explanation behind this ranking, or return to the ranking overview for the national distribution and guidance on selecting a measurement.

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Browse by state for a complete state ranking.

Population rankings use Census Bureau Vintage 2025 estimates; density rankings divide them by original ALAND square meters. Land rankings use original ALAND square meters; total-area rankings use ALAND + AWATER. Exact ties use ascending GEOID. Displayed square-mile values are rounded. Read the methodology.