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2026 Census Gazetteer

Largest counties by land area

All counties and county equivalents, including Alaska and Puerto Rico, ranked by land area. Alaska’s boroughs and census areas are included because they serve the same statistical level as counties.

Ranks 1901–2000

3,222 county equivalents · page 20 of 33

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What this part of the ranking shows

This page runs from Monroe County, Michigan at 549.358 mi² of land area to Hood River County, Oregon at 522.194 mi² of land area. The 100 entries represent 34 state-level jurisdictions. Missouri has the most entries on this page (8).

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 land area, ranks 1901 through 2000. Areas in square miles.
RankCounty / equivalentStateLand mi²Total mi²Water share
1901Monroe CountyMichigan549.4679.919.2%
1902Lancaster CountySouth Carolina549.2555.21.1%
1903Barnwell CountySouth Carolina548.4557.31.6%
1904Sedgwick CountyColorado548549.40.2%
1905Grant CountyMinnesota547.8575.54.8%
1906Atchison CountyMissouri547.3550.10.5%
1907Pulaski CountyMissouri547.2551.60.8%
1908Colquitt CountyGeorgia547.1556.61.7%
1909Montmorency CountyMichigan546.7562.62.8%
1910Hall CountyNebraska546.5552.11%
1911Cumberland CountyPennsylvania545.5550.40.9%
1912Franklin CountyFlorida5451,421.661.7%
1913Pike CountyPennsylvania544.9566.83.9%
1914Obion CountyTennessee544.9555.41.9%
1915Thomas CountyGeorgia544.6552.21.4%
1916Caldwell CountyTexas544.5546.50.3%
1917Shawnee CountyKansas544555.72.1%
1918Martin CountyFlorida543.9753.127.8%
1919Lafayette CountyFlorida543.3547.90.8%
1920Greene CountyIllinois543.1546.40.6%
1921Greene CountyIndiana542.5545.90.6%
1922Warren CountyIllinois542.45430.1%
1923Marion CountyMississippi542.3548.61.1%
1924Manistee CountyMichigan542.31,280.757.7%
1925Hopkins CountyKentucky542.3554.42.2%
1926Hamilton CountyTennessee542.2575.75.8%
1927Hamilton CountyNebraska542544.70.5%
1928Dunklin CountyMissouri541.9547.21%
1929Warren CountyKentucky541.7547.61.1%
1930Botetourt CountyVirginia541.35460.9%
1931Dallas CountyMissouri541542.80.3%
1932Dorchester CountyMaryland540.898345%
1933Ouray CountyColorado540.7542.20.3%
1934Nash CountyNorth Carolina540.4542.80.4%
1935Keweenaw CountyMichigan540.15,966.390.9%
1936Phelps CountyNebraska539.8540.40.1%
1937Harvey CountyKansas539.8540.70.2%
1938McDonald CountyMissouri539.4539.60%
1939Boyd CountyNebraska539.4544.50.9%
1940Mason CountyIllinois539.4563.64.3%
1941Montgomery CountyTennessee539.2543.80.9%
1942Cleveland CountyOklahoma538.9557.93.4%
1943Oceana CountyMichigan538.11,30658.8%
1944Sullivan CountyNew Hampshire537.9552.12.6%
1945Harmon CountyOklahoma537.3538.70.3%
1946Chittenden CountyVermont536.9620.713.5%
1947Lincoln CountyMinnesota536.8548.42.1%
1948Northampton CountyNorth Carolina536.7550.62.5%
1949Wadena CountyMinnesota536.3543.31.3%
1950Scott CountyVirginia535.85390.6%
1951Ringgold CountyIowa535.5538.90.6%
1952Etowah CountyAlabama535.1548.62.5%
1953Montgomery CountyMissouri535540.51%
1954Page CountyIowa534.9535.50.1%
1955McDowell CountyWest Virginia533.5534.90.3%
1956Haywood CountyTennessee533.1534.10.2%
1957Itawamba CountyMississippi532.8540.51.4%
1958Surry CountyNorth Carolina532.6536.70.7%
1959Jefferson CountyKansas532.6556.74.3%
1960Franklin CountyOhio532.4543.62.1%
1961Livingston CountyMissouri532.3538.61.2%
1962Scott CountyTennessee532.3533.20.2%
1963Belmont CountyOhio532.2541.31.7%
1964Western Connecticut Planning RegionConnecticut532.164817.9%
1965Granville CountyNorth Carolina532537.61%
1966Columbiana CountyOhio531.9534.70.5%
1967Taylor CountyIowa531.9534.70.5%
1968Decatur CountyIowa531.9533.50.3%
1969Anson CountyNorth Carolina531.5537.11%
1970Kosciusko CountyIndiana531.4554.44.1%
1971Hancock CountyOhio531.3533.70.4%
1972Little River CountyArkansas531.3563.35.7%
1973Sebastian CountyArkansas531.2544.52.4%
1974Shiawassee CountyMichigan531.1540.91.8%
1975Humphreys CountyTennessee530.8556.74.7%
1976San Augustine CountyTexas530.7592.310.4%
1977Brown CountyWisconsin530.1615.713.9%
1978Caldwell ParishLouisiana529.85412.1%
1979Lafayette CountyArkansas529.5546.13%
1980Sumner CountyTennessee529.5543.22.5%
1981Bath CountyVirginia529.2534.61%
1982Dodge CountyNebraska528.85432.6%
1983Swain CountyNorth Carolina527.7540.22.3%
1984Woodford CountyIllinois527.6542.92.8%
1985Caroline CountyVirginia527.45371.8%
1986Hampshire CountyMassachusetts527.2545.23.3%
1987Maries CountyMissouri526.9529.90.6%
1988Fulton CountyGeorgia526.9534.81.5%
1989Jefferson CountyGeorgia526.6529.70.6%
1990Jerauld CountySouth Dakota526.1532.61.2%
1991Knox CountyOhio525.5529.60.8%
1992Wayne CountyIowa525.5527.10.3%
1993Blair CountyPennsylvania525.1526.30.2%
1994Dauphin CountyPennsylvania524.9558.16%
1995Mecklenburg CountyNorth Carolina523.6546.14.1%
1996Wabasha CountyMinnesota523549.54.8%
1997Albany CountyNew York522.9533.32%
1998Niagara CountyNew York522.31,139.654.2%
1999Guernsey CountyOhio522.2528.31.1%
2000Hood River CountyOregon522.2533.42.1%

Read the differences behind ranks 1901–2000

The median land area among these 100 entries is 535.661 mi². The first and last entries span 27.164 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

  • Missouri8 entries · 8% of this page
  • North Carolina7 entries · 7% of this page
  • Tennessee7 entries · 7% of this page
  • Michigan6 entries · 6% of this page
  • Ohio6 entries · 6% of this page
  • Iowa5 entries · 5% of this page

The remaining 28 jurisdictions contribute 61 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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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.