US County Area home
2026 Census Gazetteer

Largest counties by total area

Rankings include both Census land and water measurements. Water can change the order substantially, especially for coastal counties and counties bordering the Great Lakes.

Ranks 2001–2100

3,222 county equivalents · page 21 of 33

Download the full dataset

What this part of the ranking shows

This page runs from Sullivan County, New Hampshire at 552.135 mi² of total area to Loudoun County, Virginia at 521.334 mi² of total area. The 100 entries represent 31 state-level jurisdictions. Missouri has the most entries on this page (11).

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.

Largest counties by total area, ranks 2001 through 2100. Areas in square miles.
RankCounty / equivalentStateLand mi²Total mi²Water share
2001Sullivan CountyNew Hampshire537.9552.12.6%
2002Iron CountyMissouri550.3552.10.3%
2003Pulaski CountyMissouri547.2551.60.8%
2004Northampton CountyNorth Carolina536.7550.62.5%
2005Cumberland CountyPennsylvania545.5550.40.9%
2006Atchison CountyMissouri547.3550.10.5%
2007Wabasha CountyMinnesota523549.54.8%
2008Sedgwick CountyColorado548549.40.2%
2009Etowah CountyAlabama535.1548.62.5%
2010Marion CountyMississippi542.3548.61.1%
2011Lincoln CountyMinnesota536.8548.42.1%
2012Lafayette CountyFlorida543.3547.90.8%
2013Warren CountyKentucky541.7547.61.1%
2014Dunklin CountyMissouri541.9547.21%
2015Caldwell CountyTexas544.5546.50.3%
2016Greene CountyIllinois543.1546.40.6%
2017Lafayette CountyArkansas529.5546.13%
2018Mecklenburg CountyNorth Carolina523.6546.14.1%
2019Botetourt CountyVirginia541.35460.9%
2020Greene CountyIndiana542.5545.90.6%
2021Hampshire CountyMassachusetts527.2545.23.3%
2022Hamilton CountyNebraska542544.70.5%
2023Boyd CountyNebraska539.4544.50.9%
2024Sebastian CountyArkansas531.2544.52.4%
2025Montgomery CountyTennessee539.2543.80.9%
2026Franklin CountyOhio532.4543.62.1%
2027Wadena CountyMinnesota536.3543.31.3%
2028Sumner CountyTennessee529.5543.22.5%
2029Warren CountyIllinois542.45430.1%
2030Dodge CountyNebraska528.85432.6%
2031Woodford CountyIllinois527.6542.92.8%
2032Dallas CountyMissouri541542.80.3%
2033Nash CountyNorth Carolina540.4542.80.4%
2034Ouray CountyColorado540.7542.20.3%
2035Belmont CountyOhio532.2541.31.7%
2036Caldwell ParishLouisiana529.85412.1%
2037Shiawassee CountyMichigan531.1540.91.8%
2038Harvey CountyKansas539.8540.70.2%
2039Montgomery CountyMissouri535540.51%
2040Itawamba CountyMississippi532.8540.51.4%
2041Phelps CountyNebraska539.8540.40.1%
2042Swain CountyNorth Carolina527.7540.22.3%
2043McDonald CountyMissouri539.4539.60%
2044Scott CountyVirginia535.85390.6%
2045Lee CountyIowa517.6538.94%
2046Ringgold CountyIowa535.5538.90.6%
2047Harmon CountyOklahoma537.3538.70.3%
2048Livingston CountyMissouri532.3538.61.2%
2049Hamlin CountySouth Dakota507.1538.15.8%
2050Granville CountyNorth Carolina532537.61%
2051Anson CountyNorth Carolina531.5537.11%
2052Caroline CountyVirginia527.45371.8%
2053Surry CountyNorth Carolina532.6536.70.7%
2054Page CountyIowa534.9535.50.1%
2055Sussex CountyNew Jersey518.5535.43.2%
2056McDowell CountyWest Virginia533.5534.90.3%
2057Fulton CountyGeorgia526.9534.81.5%
2058Columbiana CountyOhio531.9534.70.5%
2059Taylor CountyIowa531.9534.70.5%
2060Bath CountyVirginia529.2534.61%
2061Haywood CountyTennessee533.1534.10.2%
2062Kanabec CountyMinnesota521.6533.72.3%
2063Hancock CountyOhio531.3533.70.4%
2064Decatur CountyIowa531.9533.50.3%
2065Hood River CountyOregon522.2533.42.1%
2066Albany CountyNew York522.9533.32%
2067Scott CountyTennessee532.3533.20.2%
2068Fulton CountyNew York495.5532.97%
2069Jerauld CountySouth Dakota526.1532.61.2%
2070Yankton CountySouth Dakota521.2532.32.1%
2071Love CountyOklahoma513.9532.33.4%
2072Maries CountyMissouri526.9529.90.6%
2073Jefferson CountyGeorgia526.6529.70.6%
2074Knox CountyOhio525.5529.60.8%
2075Gadsden CountyFlorida516.4528.52.3%
2076Guernsey CountyOhio522.2528.31.1%
2077Midland CountyMichigan518.4528.11.8%
2078Big Stone CountyMinnesota499.1528.15.5%
2079Aransas CountyTexas252.352852.2%
2080Jefferson CountyMississippi519.9527.31.4%
2081Wayne CountyIowa525.5527.10.3%
2082Harford CountyMaryland437.1526.717%
2083Currituck CountyNorth Carolina261.9526.450.2%
2084Blair CountyPennsylvania525.1526.30.2%
2085Otsego CountyMichigan515526.22.1%
2086Dyer CountyTennessee512.4526.22.6%
2087Gasconade CountyMissouri5195261.3%
2088Henderson CountyTennessee520525.91.1%
2089Knox CountyTennessee508.4525.93.3%
2090Davidson CountyTennessee503.5525.34.1%
2091Kane CountyIllinois519.4524.20.9%
2092St. Louis CountyMissouri508.55242.9%
2093Rowan CountyNorth Carolina511.65242.4%
2094Knox CountyIndiana515.8523.91.5%
2095Tioga CountyNew York518.85230.8%
2096Morgan CountyTennessee522.2522.50.1%
2097Porter CountyIndiana418.1521.819.9%
2098Adams CountyPennsylvania518.6521.70.6%
2099Coal CountyOklahoma516.8521.40.9%
2100Loudoun CountyVirginia515.7521.31.1%

Read the differences behind ranks 2001–2100

The median total area among these 100 entries is 537.345 mi². The first and last entries span 30.801 square miles. This median describes the entries on this page, not the full national dataset. Pagination is a browsing boundary, not a distinct geographic region.

A difference of one position means only that two entries are adjacent in this ordering. Their actual size difference can be tiny or substantial. Compare the measurements as well as the rank, and use the original square-meter fields when rounded labels appear equal.

Where the entries on this page are located

  • Missouri11 entries · 11% of this page
  • North Carolina9 entries · 9% of this page
  • Tennessee9 entries · 9% of this page
  • Iowa6 entries · 6% of this page
  • Ohio6 entries · 6% of this page
  • Minnesota5 entries · 5% of this page

The remaining 25 jurisdictions contribute 54 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.

Find a county

Browse by state for a complete state ranking.

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.