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Least densely populated counties

County equivalents with the fewest residents per square mile of land. Large rural areas in Alaska and the Great Plains dominate; density is an average across each whole county.

Ranks 3001–3100

Vintage 2025 population estimates · 2026 Gazetteer land area · 3,222 county equivalents · page 31 of 33

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What this part of the ranking shows

This page runs from Plymouth County, Massachusetts at 830 people per mi² to Aguadilla Municipio, Puerto Rico at 1,456 people per mi². The 100 entries represent 30 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.

Least densely populated counties, ranks 3001 through 3100. Population is the July 1, 2025 estimate; density is per square mile of land.
RankCounty / equivalentStatePopulationPer mi²Land mi²
3001Plymouth CountyMassachusetts546,829830658.5
3002Henry CountyGeorgia264,922831318.7
3003Arapahoe CountyColorado673,820845797.9
3004Washington CountyOregon611,708845724.3
3005Clark CountyWashington532,119847628.5
3006Will CountyIllinois712,253852835.9
3007Butler CountyOhio400,128858466.5
3008Manatí MunicipioPuerto Rico38,41385944.7
3009Barranquitas MunicipioPuerto Rico29,50986234.2
3010Sarasota CountyFlorida479,958863556.1
3011Poquoson cityVirginia13,29286615.4
3012El Paso CountyTexas877,8588661,013.5
3013Guilford CountyNorth Carolina562,234870646
3014Loudoun CountyVirginia449,749872515.7
3015Sarpy CountyNebraska208,303875238
3016Northampton CountyPennsylvania324,411877369.8
3017Mayagüez MunicipioPuerto Rico68,90588877.6
3018Polk CountyIowa516,546902572.7
3019Pasco CountyFlorida674,516903746.7
3020Anoka CountyMinnesota381,605904422
3021Hatillo MunicipioPuerto Rico37,81090641.7
3022Erie CountyNew York946,7419081,042.8
3023Muscogee CountyGeorgia202,171934216.5
3024Chesterfield CountyVirginia397,148938423.5
3025Lafayette ParishLouisiana257,949960268.8
3026Capitol Planning RegionConnecticut994,1159681,027.4
3027Gloucester CountyNew Jersey312,638971322
3028Danville cityVirginia41,64797342.8
3029Arroyo MunicipioPuerto Rico14,74498115
3030Galveston CountyTexas372,207981379.4
3031Hamilton CountyIndiana387,036981394.4
3032Forsyth CountyNorth Carolina401,718984408
3033East Baton Rouge ParishLouisiana456,1801,002455.5
3034Knox CountyTennessee511,4531,006508.4
3035Lake CountyIndiana504,6121,011498.9
3036Lake CountyOhio232,2171,012229.4
3037Kane CountyIllinois525,7571,012519.4
3038Quebradillas MunicipioPuerto Rico23,1891,02322.7
3039Franklin cityVirginia8,4781,0248.3
3040Las Piedras MunicipioPuerto Rico34,7231,02533.9
3041Fajardo MunicipioPuerto Rico30,7801,02929.9
3042Kent CountyRhode Island173,4951,029168.6
3043Buena Vista cityVirginia6,6721,0366.4
3044Covington cityVirginia5,6801,0395.5
3045Bucks CountyPennsylvania647,8281,072604.4
3046Ocean CountyNew Jersey673,7461,072628.3
3047Bristol CountyMassachusetts593,6401,073553.1
3048Naranjito MunicipioPuerto Rico29,6271,08327.4
3049Clarke CountyGeorgia129,9211,089119.3
3050Rincón MunicipioPuerto Rico15,5821,09114.3
3051Kenton CountyKentucky175,7791,096160.4
3052Humacao MunicipioPuerto Rico49,2491,10144.7
3053Cidra MunicipioPuerto Rico39,6691,10236
3054Rockwall CountyTexas140,7381,106127.2
3055King CountyWashington2,344,9391,1082,115.8
3056Loíza MunicipioPuerto Rico21,5421,11119.4
3057Lehigh CountyPennsylvania384,3831,113345.3
3058Ponce MunicipioPuerto Rico128,3841,117114.9
3059Lee CountyFlorida875,6071,121781.2
3060Naugatuck Valley Planning RegionConnecticut463,3491,122412.8
3061Wyandotte CountyKansas170,5971,125151.6
3062Fort Bend CountyTexas975,1911,131862.1
3063Morris CountyNew Jersey524,2511,137461
3064Monroe CountyNew York750,5061,142657
3065Oklahoma CountyOklahoma822,1251,160708.9
3066Fayette CountyKentucky329,7511,162283.9
3067Vega Baja MunicipioPuerto Rico53,5051,16745.9
3068Montgomery CountyOhio539,5981,170461.4
3069Davis CountyUtah381,2271,173324.9
3070Somerset CountyNew Jersey356,4861,181301.9
3071Barceloneta MunicipioPuerto Rico22,3161,19318.7
3072Western Connecticut Planning RegionConnecticut640,4821,204532.1
3073Durham CountyNorth Carolina347,2401,208287.6
3074Shelby CountyTennessee910,2261,209752.8
3075Aguada MunicipioPuerto Rico37,3191,21030.8
3076Jackson CountyMissouri732,9941,212604.7
3077Denton CountyTexas1,069,3461,218878.1
3078Tulsa CountyOklahoma698,7821,226570.2
3079Vega Alta MunicipioPuerto Rico34,3511,24127.7
3080Lucas CountyOhio423,3471,246339.7
3081Canóvanas MunicipioPuerto Rico41,3021,25632.9
3082Forsyth CountyGeorgia282,8051,259224.6
3083Martinsville cityVirginia13,8491,26411
3084Bristol cityVirginia16,4181,27512.9
3085New Hanover CountyNorth Carolina245,9591,279192.3
3086Summit CountyOhio538,3761,305412.7
3087Hormigueros MunicipioPuerto Rico15,2221,34211.3
3088Johnson CountyKansas636,9061,345473.6
3089Staunton cityVirginia26,8011,34519.9
3090Howard CountyMaryland339,1831,352251
3091New Castle CountyDelaware588,0261,379426.3
3092Juncos MunicipioPuerto Rico36,6391,38326.5
3093Monmouth CountyNew Jersey651,0351,390468.2
3094Duval CountyFlorida1,062,9631,394762.7
3095Travis CountyTexas1,389,6701,398994.4
3096Baltimore CountyMaryland847,6501,417598.4
3097Gurabo MunicipioPuerto Rico39,7801,42627.9
3098Jefferson ParishLouisiana431,3981,434300.9
3099Anne Arundel CountyMaryland603,3801,455414.8
3100Aguadilla MunicipioPuerto Rico53,2191,45636.5

Read the differences behind ranks 3001–3100

The median density among these 100 entries is 1,094 people per mi². The first and last entries span 626 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
  • Virginia10 entries · 10% of this page
  • Texas6 entries · 6% of this page
  • New Jersey5 entries · 5% of this page
  • Ohio5 entries · 5% of this page
  • Florida4 entries · 4% of this page

The remaining 24 jurisdictions contribute 47 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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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.