Data / Rankings / Population density / US counties
US counties by population density, 2025
New York County had the highest population density of 3144 counties in 2025, at 28,370 inhabitants per km². Yukon-Koyukuk Census Area had the lowest, at 0 inhabitants per km². The median was 17.4 inhabitants per km² and the figure for the United States was 37.3 inhabitants per km². Source: the U.S. Census Bureau.
New York County New York County: 28,370 inhabitants per km² 28,370 Kings County Kings County: 14,770.1 inhabitants per km² 14,770.1 Bronx County Bronx County: 12,866.5 inhabitants per km² 12,866.5 Queens County Queens County: 8,374.4 inhabitants per km² 8,374.4 San Francisco County San Francisco County: 6,832 inhabitants per km² 6,832 Hudson County Hudson County: 6,143.8 inhabitants per km² 6,143.8 Suffolk County Suffolk County: 5,248.2 inhabitants per km² 5,248.2 Philadelphia County Philadelphia County: 4,525.1 inhabitants per km² 4,525.1 District of Columbia District of Columbia: 4,381.3 inhabitants per km² 4,381.3 Alexandria city Alexandria city: 4,153.4 inhabitants per km² 4,153.4 Arlington County Arlington County: 3,622.8 inhabitants per km² 3,622.8 Richmond County Richmond County: 3,364.8 inhabitants per km² 3,364.8 Falls Church city Falls Church city: 2,860.1 inhabitants per km² 2,860.1 Essex County Essex County: 2,745 inhabitants per km² 2,745 Baltimore city Baltimore city: 2,718.8 inhabitants per km² 2,718.8 Union County Union County: 2,261.2 inhabitants per km² 2,261.2 Cook County Cook County: 2,122.5 inhabitants per km² 2,122.5 Manassas Park city Manassas Park city: 2,113.5 inhabitants per km² 2,113.5 Nassau County Nassau County: 1,898.2 inhabitants per km² 1,898.2 Denver County Denver County: 1,868.1 inhabitants per km² 1,868.1 St. Louis city St. Louis city: 1,740.1 inhabitants per km² 1,740.1 Manassas city Manassas city: 1,739 inhabitants per km² 1,739 Norfolk city Norfolk city: 1,674.2 inhabitants per km² 1,674.2 Charlottesville city Charlottesville city: 1,672.8 inhabitants per km² 1,672.8 Fairfax city Fairfax city: 1,656.3 inhabitants per km² 1,656.3 Bergen County Bergen County: 1,620.4 inhabitants per km² 1,620.4 Orange County Orange County: 1,533 inhabitants per km² 1,533 Richmond city Richmond city: 1,528.7 inhabitants per km² 1,528.7 Milwaukee County Milwaukee County: 1,477.9 inhabitants per km² 1,477.9 Ramsey County Ramsey County: 1,373.5 inhabitants per km² 1,373.5 Pinellas County Pinellas County: 1,337.5 inhabitants per km² 1,337.5 Delaware County Delaware County: 1,220.3 inhabitants per km² 1,220.3 Lexington city Lexington city: 1,200.2 inhabitants per km² 1,200.2 Winchester city Winchester city: 1,187.4 inhabitants per km² 1,187.4 Dallas County Dallas County: 1,176.9 inhabitants per km² 1,176.9 Fairfax County Fairfax County: 1,153.2 inhabitants per km² 1,153.2 Harris County Harris County: 1,140.9 inhabitants per km² 1,140.9 Harrisonburg city Harrisonburg city: 1,132.3 inhabitants per km² 1,132.3 Fredericksburg city Fredericksburg city: 1,122.9 inhabitants per km² 1,122.9 Portsmouth city Portsmouth city: 1,122.1 inhabitants per km² 1,122.1 inhabitants per km². Source: Invokely calculation with data from U.S. Census Bureau . Retrieved 2026-10-09. Full ranking Rank Counties 2025inhabitants per km² Change on 2024 1 New York County 28,370 -0% 2 Kings County 14,770.1 -0.2% 3 Bronx County 12,866.5 0% 4 Queens County 8,374.4 -0.4% 5 San Francisco County 6,832 +0.6% 6 Hudson County 6,143.8 +0.5% 7 Suffolk County 5,248.2 -0.2% 8 Philadelphia County 4,525.1 +0.1% 9 District of Columbia 4,381.3 +0.3% 10 Alexandria city 4,153.4 +0.8% 11 Arlington County 3,622.8 +1.8% 12 Richmond County 3,364.8 +0.3% 13 Falls Church city 2,860.1 +0.8% 14 Essex County 2,745 +0.6% 15 Baltimore city 2,718.8 -0% 16 Union County 2,261.2 +0.5% 17 Cook County 2,122.5 +0.1% 18 Manassas Park city 2,113.5 +0.8% 19 Nassau County 1,898.2 +0.1% 20 Denver County 1,868.1 -0.1% 21 St. Louis city 1,740.1 -0.8% 22 Manassas city 1,739 +0.7% 23 Norfolk city 1,674.2 -0% 24 Charlottesville city 1,672.8 -0.5% 25 Fairfax city 1,656.3 +2.8% 26 Bergen County 1,620.4 +0.4% 27 Orange County 1,533 -0.3% 28 Richmond city 1,528.7 +1% 29 Milwaukee County 1,477.9 -0% 30 Ramsey County 1,373.5 +0.2% 31 Pinellas County 1,337.5 -1.2% 32 Delaware County 1,220.3 -0.1% 33 Lexington city 1,200.2 +0.9% 34 Winchester city 1,187.4 +0.7% 35 Dallas County 1,176.9 -0.1% 36 Fairfax County 1,153.2 +0.7% 37 Harris County 1,140.9 +1% 38 Harrisonburg city 1,132.3 +0.1% 39 Fredericksburg city 1,122.9 +1.4% 40 Portsmouth city 1,122.1 -0.1% 41 DeKalb County 1,117.1 +0.2% 42 Wayne County 1,116.3 +0.2% 43 Passaic County 1,102.8 +0.1% 44 Middlesex County 1,102.6 +0.2% 45 DuPage County 1,100.1 +0.2% 46 Cuyahoga County 1,041.1 -0.1% 47 Hampton city 1,030.2 -0.1% 48 Newport News city 1,025.4 -0.1% 49 Tarrant County 1,003.2 +0.8% 50 Franklin County 987.3 +0.7% 51 Marion County 967.4 +0.2% 52 Colonial Heights city 962.1 +0.6% 53 Camden County 934.5 +0.4% 54 Greater Bridgeport Planning Region 930 +0.4% 55 Broomfield County 927.3 +1% 56 Los Angeles County 921.9 -0.6% 57 Gwinnett County 911.7 +0.8% 58 Westchester County 910.3 +0.7% 59 Mecklenburg County 909.4 +2.2% 60 Cobb County 901.7 +0.6% 61 Roanoke city 899.9 +0.4% 62 Hennepin County 895.4 +0.6% 63 Hopewell city 867.4 +0.9% 64 Alameda County 856.9 0% 65 Montgomery County 841.4 +0.1% 66 Orleans Parish 824.6 -0.4% 67 Clayton County 810.6 +0.1% 68 Jefferson County 806.2 +0.1% 69 Fulton County 805.2 +0.8% 70 Bristol County 800 -0.3% 71 Hamilton County 798.4 +0.1% 72 Rockland County 794.5 +0.7% 73 Middlesex County 788.3 +0.4% 74 Prince George's County 776.3 +0.6% 75 St. Louis County 752.4 -0.1% 76 Norfolk County 721.1 +0.3% 77 Douglas County 717.1 +0.9% 78 Virginia Beach city 715.9 -0% 79 Macomb County 713.8 +0.4% 80 Multnomah County 712.5 +0.1% 81 Montgomery County 701.7 +0.3% 82 Radford city 688 0% 83 Mercer County 686.8 +0.5% 84 Salem city 686.6 +0.3% 85 Williamsburg city 685.1 -0.5% 86 Bexar County 672.3 +1% 87 Suffolk County 655.3 +0.2% 88 Orange County 653.3 +0.5% 89 Essex County 648 +0.1% 90 Allegheny County 648 -0.2% 91 Sacramento County 647.3 +0.5% 92 Broward County 646.2 -0% 93 Lynchburg city 642.1 +1.3% 94 San Mateo County 640 +0.4% 95 Providence County 639.5 +0.5% 96 Honolulu County 635.4 -0.1% 97 Contra Costa County 630.2 0% 98 Salt Lake County 626.3 +0.3% 99 Lake County 626 +0.1% 100 Waynesboro city 617.7 +1.6% 101 Seminole County 613.8 +0.5% 102 South Central Connecticut Planning Region 608.4 +0.2% 103 Collin County 595.1 +3.4% 104 Hillsborough County 594.6 +0.2% 105 Wake County 581.5 +2.3% 106 Prince William County 579.2 +0.9% 107 Oakland County 573.5 +0.5% 108 Petersburg city 573.3 -0.9% 109 Santa Clara County 572.5 +0.3% 110 Davidson County 572 +1.3% 111 Miami-Dade County 569.4 -0.4% 112 Henrico County 566.4 +0.8% 113 Anne Arundel County 561.6 +0.4% 114 Jefferson Parish 553.6 -0.2% 115 Baltimore County 547 -0.1% 116 Travis County 539.6 +1.1% 117 Duval County 538.1 +0.8% 118 Monmouth County 536.9 +0.4% 119 New Castle County 532.5 +0.3% 120 Howard County 521.9 +0.4% 121 Staunton city 519.5 +2.1% 122 Johnson County 519.2 +1% 123 Summit County 503.7 +0.3% 124 New Hanover County 493.8 +1.1% 125 Bristol city 492.4 -0.2% 126 Martinsville city 488.1 +0.4% 127 Forsyth County 486.1 +1.4% 128 Lucas County 481.2 -0.2% 129 Tulsa County 473.2 +0.6% 130 Denton County 470.2 +2.2% 131 Jackson County 468 +0.5% 132 Shelby County 466.9 -0.6% 133 Durham County 466.2 +1.4% 134 Western Connecticut Planning Region 464.7 +0.4% 135 Somerset County 456 +0.4% 136 Davis County 453 +0.7% 137 Montgomery County 451.6 +0.5% 138 Fayette County 448.5 +0.8% 139 Oklahoma County 447.8 +0.5% 140 Monroe County 441.1 0% 141 Morris County 439.1 +0.6% 142 Fort Bend County 436.7 +2.5% 143 Wyandotte County 434.4 +0.4% 144 Naugatuck Valley Planning Region 433.4 +0.4% 145 Lee County 432.8 +1.6% 146 Lehigh County 429.8 +0.4% 147 King County 427.9 +1.2% 148 Rockwall County 427.1 +2.8% 149 Kenton County 423.2 +0.8% 150 Clarke County 420.5 -0.6% 151 Bristol County 414.4 +0.5% 152 Ocean County 414 +0.8% 153 Bucks County 413.8 -0.1% 154 Covington city 401 -0.1% 155 Buena Vista city 400.1 +0.9% 156 Kent County 397.4 +0.7% 157 Franklin city 395.5 +0.9% 158 Kane County 390.9 +0.4% 159 Lake County 390.9 0% 160 Lake County 390.5 +0.4% 161 Knox County 388.4 +0.8% 162 East Baton Rouge Parish 386.7 +0.4% 163 Forsyth County 380.1 +1% 164 Hamilton County 378.9 +1.9% 165 Galveston County 378.8 +1.3% 166 Danville city 375.7 -0.7% 167 Gloucester County 374.9 +0.4% 168 Capitol Planning Region 373.6 +0.5% 169 Lafayette Parish 370.5 +1.3% 170 Chesterfield County 362.1 +1.5% 171 Muscogee County 360.5 0% 172 Erie County 350.5 -0.1% 173 Anoka County 349.2 +1% 174 Pasco County 348.8 +2.8% 175 Polk County 348.2 +0.6% 176 Northampton County 338.7 +0.4% 177 Sarpy County 337.9 +1.9% 178 Loudoun County 336.7 +1.4% 179 Guilford County 336 +0.9% 180 El Paso County 334.4 -0.2% 181 Poquoson city 334.2 +3.3% 182 Sarasota County 333.2 +0.8% 183 Butler County 331.1 +0.6% 184 Will County 329 +0.5% 185 Clark County 326.9 +1.1% 186 Washington County 326.1 +0.5% 187 Arapahoe County 326.1 -0.3% 188 Henry County 320.9 +1.9% 189 Plymouth County 320.6 +0.4% 190 Emporia city 317.3 +0.7% 191 Dakota County 314.1 +0.9% 192 Newport County 313.1 -0.4% 193 Galax city 312.7 -0.5% 194 Palm Beach County 309.7 +0.1% 195 Kent County 306.9 +0.7% 196 Schenectady County 306.7 +0.5% 197 Vanderburgh County 301.1 +0.5% 198 San Diego County 301 -0.2% 199 Douglas County 297.7 +1.5% 200 St. Charles County 293.9 +0.9% 201 Jefferson County 293.2 0% 202 Waukesha County 293 +0.3% 203 Rockdale County 292.7 +1% 204 Chesapeake city 291.3 +0.2% 205 Hampden County 290.6 +0.2% 206 Montgomery County 289.4 +4% 207 Washington County 287.9 +1.4% 208 Chester County 286.6 +0.5% 209 Greenville County 286.5 +1.6% 210 Hamilton County 278.3 +0.9% 211 Chatham County 278.2 +0.7% 212 Kitsap County 276.9 +0.9% 213 Cherokee County 274.5 +1.8% 214 St. Lucie County 271.7 +2.8% 215 Gaston County 267.6 +1.5% 216 Cabarrus County 266.9 +1.6% 217 York County 263.2 +0.1% 218 Williamson County 260.5 +3.3% 219 Clay County 257.3 +0.9% 220 Lorain County 254.4 +0.6% 221 Brevard County 252.6 +1.2% 222 Stark County 251 +0.1% 223 Fayette County 248.2 +0.3% 224 Warren County 247.4 +0.8% 225 Richmond County 245.9 0% 226 Stafford County 245.6 +1.2% 227 Bibb County 243.9 +0.1% 228 Campbell County 243.5 +1.5% 229 Manatee County 243.4 +2% 230 Genesee County 243.1 -0% 231 Rutherford County 240.8 +1.6% 232 Kenosha County 239.3 0% 233 Barrow County 239.1 +2.9% 234 Albany County 237.2 +0.5% 235 Allen County 236.4 +0.8% 236 Paulding County 236.1 +1.6% 237 Harford County 235.3 +0.3% 238 Burlington County 232.6 +0.8% 239 Onondaga County 231.4 -0.3% 240 Jefferson County 231.2 -0.1% 241 Racine County 230.9 +0.2% 242 Lancaster County 230.4 +0.2% 243 St. Joseph County 230.1 -0% 244 Barnstable County 228.8 -0.2% 245 San Joaquin County 228.5 +0.8% 246 Boone County 227.8 +1.3% 247 Worcester County 227.1 +0.5% 248 Hidalgo County 226.5 +0.9% 249 James City County 226.1 +0.5% 250 Columbia County 225.1 +1.2%
Showing the top 250 of 3144. The CSV download has every row.
Other periods
About this ranking Resident population divided by land area in km². World Bank figures use mid-year population and land area excluding inland water.
United States: Census Bureau population estimates for 1 July divided by land area (water excluded) from the latest Census Gazetteer files. US tables often give people per square mile; multiply persons per km² by 2.59 to compare.
Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.
How to cite U.S. Census Bureau. Population Estimates Program resident population on 1 July divided by land area from the latest Census Gazetteer files, persons per km². https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-09.Use this data in your AI agent Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:
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Questions Which county has the highest population density? New York County, with 28,370 inhabitants per km² in 2025, according to the U.S. Census Bureau.
Which county has the lowest population density? Yukon-Koyukuk Census Area, with 0 inhabitants per km² in 2025.
Where does this ranking come from? Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Population Estimates Program resident population on 1 July divided by land area from the latest Census Gazetteer files, persons per km². Retrieved 2026-10-09.
Population density: other rankings
US counties: more rankings 