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2026 Census Gazetteer

Counties with the highest water share

The percentage of each county equivalent’s published square-mile total that is water. A high percentage reflects water assigned to the statistical geography, not necessarily lakes entirely enclosed by its land boundary.

Ranks 2901–3000

3,222 county equivalents · page 30 of 33

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What this part of the ranking shows

This page runs from San Miguel County, Colorado at 0.156% water to Columbia County, Arkansas at 0.1% water. The 100 entries represent 31 state-level jurisdictions. Iowa has the most entries on this page (14).

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.

Counties with the highest water share, ranks 2901 through 3000. Areas in square miles.
RankCounty / equivalentStateLand mi²Total mi²Water share
2901San Miguel CountyColorado1,286.71,288.70.2%
2902Floyd CountyIowa500.6501.40.2%
2903Lunenburg CountyVirginia431.7432.40.2%
2904Lincoln ParishLouisiana471.6472.40.2%
2905Lafayette CountyWisconsin633.6634.60.2%
2906Chaffee CountyColorado1,013.41,0150.2%
2907Lamb CountyTexas1,016.21,017.70.2%
2908Gibson CountyTennessee602.7603.70.1%
2909Pinal CountyArizona5,366.75,374.70.1%
2910Grant CountyNew Mexico3,961.23,967.10.1%
2911Lampasas CountyTexas712.5713.60.1%
2912Garfield CountyOklahoma1,058.51,060.10.1%
2913Tama CountyIowa721722.10.1%
2914Saline CountyKansas720.2721.30.1%
2915Lincoln CountyKansas719.4720.50.1%
2916Musselshell CountyMontana1,8691,871.70.1%
2917Jefferson CountyMontana1,6571,659.40.1%
2918Greeley CountyNebraska569.8570.70.1%
2919Iroquois CountyIllinois1,117.41,1190.1%
2920Carroll CountyIowa569.5570.30.1%
2921Walker CountyGeorgia446.3446.90.1%
2922Logan CountyIllinois618.1618.90.1%
2923Fallon CountyMontana1,620.61,622.90.1%
2924Sioux CountyIowa767.97690.1%
2925Huerfano CountyColorado1,5911,593.30.1%
2926Lewis CountyTennessee282.1282.50.1%
2927Morovis MunicipioPuerto Rico38.938.90.1%
2928Lawrence CountyTennessee617.16180.1%
2929Shackelford CountyTexas914.3915.50.1%
2930Brewster CountyTexas6,183.86,192.30.1%
2931Hettinger CountyNorth Dakota1,132.21,133.80.1%
2932Clarke CountyIowa431.1431.70.1%
2933McNairy CountyTennessee562.8563.60.1%
2934Custer CountySouth Dakota1,556.91,559.10.1%
2935Edwards CountyIllinois222.4222.70.1%
2936Monroe CountyIowa433.7434.30.1%
2937Keya Paha CountyNebraska772.9773.90.1%
2938McDonough CountyIllinois589.3590.10.1%
2939Pike CountyAlabama672.16730.1%
2940Butler CountyAlabama776.8777.90.1%
2941Douglas CountyIllinois416.7417.20.1%
2942Iron CountyUtah3,296.23,300.60.1%
2943Josephine CountyOregon1,638.61,640.80.1%
2944Oglala Lakota CountySouth Dakota2,093.62,096.40.1%
2945San Benito CountyCalifornia1,388.71,390.50.1%
2946Hamilton CountyIowa576.7577.50.1%
2947Ford CountyIllinois485.6486.20.1%
2948Chaves CountyNew Mexico6,067.26,075.10.1%
2949Keokuk CountyIowa579.2579.90.1%
2950Real CountyTexas699.2700.10.1%
2951Auglaize CountyOhio401.4401.90.1%
2952Meade CountyKansas978.1979.30.1%
2953Oneida CountyIdaho1,1991,200.50.1%
2954Dundy CountyNebraska919.7920.90.1%
2955Berkeley CountyWest Virginia321.1321.50.1%
2956El Paso CountyColorado2,126.42,129.10.1%
2957Jones CountySouth Dakota969.7970.90.1%
2958Ida CountyIowa431.5432.10.1%
2959Perkins CountyNebraska883.3884.40.1%
2960Washington CountyUtah2,427.62,430.60.1%
2961Warren CountyIllinois542.45430.1%
2962Cass CountyIowa564.3564.90.1%
2963Phelps CountyNebraska539.8540.40.1%
2964Sheridan CountyWyoming2,523.42,526.40.1%
2965Mora CountyNew Mexico1,926.31,928.60.1%
2966Harrison CountyWest Virginia416416.50.1%
2967Marshall CountyIowa572.5573.20.1%
2968Howell CountyMissouri927.2928.30.1%
2969Hardin CountyIowa569.35700.1%
2970Meagher CountyMontana2,391.92,394.80.1%
2971McPherson CountyNebraska859.3860.30.1%
2972Douglas CountyMissouri813.6814.60.1%
2973Lemhi CountyIdaho4,563.74,569.10.1%
2974Dallam CountyTexas1,503.41,505.10.1%
2975Seward CountyKansas639.7640.40.1%
2976Walthall CountyMississippi403.9404.40.1%
2977Duval CountyTexas1,793.51,795.60.1%
2978Crawford CountyIowa714.27150.1%
2979Cottle CountyTexas900.6901.60.1%
2980Red Willow CountyNebraska717.27180.1%
2981Nuckolls CountyNebraska575.2575.80.1%
2982Fulton CountyPennsylvania437.6438.10.1%
2983Adams CountyNorth Dakota987.5988.70.1%
2984Thomas CountyNebraska712.6713.40.1%
2985Sandoval CountyNew Mexico3,710.23,714.40.1%
2986Hamilton CountyKansas996.5997.60.1%
2987Kemper CountyMississippi766.27670.1%
2988Cochise CountyArizona6,209.96,216.70.1%
2989Dade CountyGeorgia174.1174.30.1%
2990Nodaway CountyMissouri877877.90.1%
2991Wheeler CountyTexas914.5915.50.1%
2992Cheyenne CountyKansas1,019.91,020.90.1%
2993Valencia CountyNew Mexico1,066.71,067.80.1%
2994Turner CountySouth Dakota617.1617.70.1%
2995Eureka CountyNevada4,175.74,1800.1%
2996Lamar CountyAlabama604.8605.40.1%
2997White Pine CountyNevada8,886.78,895.70.1%
2998Deaf Smith CountyTexas1,496.81,498.30.1%
2999Audubon CountyIowa443443.40.1%
3000Columbia CountyArkansas766.1766.80.1%

Read the differences behind ranks 2901–3000

The median water share among these 100 entries is 0.129 %. The first and last entries span 0.056 percentage points. This median describes the entries on this page, not the full national dataset. Pagination is a browsing boundary, not a distinct geographic region.

A percentage-point gap is the subtraction of two shares. It differs from a relative percentage change, and it does not tell you the difference in water square miles. Check each profile’s original water measurement if absolute water extent is your question.

Where the entries on this page are located

  • Iowa14 entries · 14% of this page
  • Texas10 entries · 10% of this page
  • Nebraska9 entries · 9% of this page
  • Illinois7 entries · 7% of this page
  • Kansas6 entries · 6% of this page
  • New Mexico5 entries · 5% of this page

The remaining 25 jurisdictions contribute 49 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.

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.