County Species Counts

Number of Species by County

While most Iowa counties are similar in size, the geographic area is presented for comparisons. Of particular note is the disparity of water area among various counties.

Click on a column title to sort by that column; click again to reverse the sort.

County	# of Species	County Area (sq. mi.)	Water Area (sq. mi.)
Adair	37	570	1
Adams	33	425	1.87
Allamakee	62	658	19.14
Appanoose	41	516	20.1
Audubon	37	443	0.44
Benton	54	718	2.06
Black Hawk	69	571	4.8
Boone	44	573	2.05
Bremer	49	439	1.7
Buchanan	58	573	2.09
Buena Vista	42	580	5.28
Butler	44	581	1.18
Calhoun	46	572	2.14
Carroll	50	570	0.92
Cass	44	565	0.68
Cedar	55	581	2.44
Cerro Gordo	42	575	6.8
Cherokee	58	577	0.18
Chickasaw	46	505	0.84
Clarke	46	431	0.6
Clay	37	572	3.63
Clayton	56	792	14
Clinton	55	710	15.21
Crawford	44	714	0.63
Dallas	43	591	5.26
Davis	43	504	1.65
Decatur	44	533	1.52
Delaware	46	579	1.19
Des Moines	50	429	13.65
Dickinson	58	403	22.63
Dubuque	44	616	8.41
Emmet	39	402	6.63
Fayette	57	731	0.52
Floyd	48	501	0.74
Franklin	40	583	0.57
Fremont	33	516	5.68
Greene	49	571	2.72
Grundy	44	502	0.03
Guthrie	47	593	2.46
Hamilton	47	577	0.76
Hancock	47	573	2.03
Hardin	49	569	0.68
Harrison	36	700	4.2
Henry	52	436	2.24
Howard	43	473	0.36
Humboldt	33	435	1.31
Ida	49	432	0.52
Iowa	44	587	0.9
Jackson	51	649	13.66
Jasper	52	732	2.94
Jefferson	46	436	1.38
Johnson	70	623	8.87
Jones	47	576	1.39
Keokuk	51	579	0.75
Kossuth	40	974	1.38
Lee	49	538	21.37
Linn	62	724	7.1
Louisa	42	417	15.73
Lucas	63	434	3.63
Lyon	42	587	0.13
Madison	53	562	1.16
Mahaska	53	573	2.53
Marion	47	570	16.32
Marshall	47	573	0.7
Mills	39	439	3.13
Mitchell	31	469	0.47
Monona	36	698	5.73
Monroe	42	434	0.7
Montgomery	34	424	0.93
Muscatine	69	449	10.4
O'Brien	46	573	0.17
Osceola	44	399	0.71
Page	39	535	0.52
Palo Alto	39	569	5.57
Plymouth	42	863	0.39
Pocahontas	40	579	1.42
Polk	63	591	22.55
Pottawattamie	33	959	5.68
Poweshiek	42	586	1.14
Ringgold	43	538	1.26
Sac	70	578	2.56
Scott	51	468	10.24
Shelby	39	591	0.54
Sioux	41	768	0.7
Story	65	573	0.84
Tama	44	722	1.07
Taylor	35	534	0.87
Union	43	425	1.57
Van Buren	45	490	5.73
Wapello	49	435	4.17
Warren	58	573	1.56
Washington	53	570	2.06
Wayne	47	527	1.48
Webster	48	718	2.82
Winnebago	36	401	1.1
Winneshiek	44	689	0.27
Woodbury	44	877	4.79
Worth	36	401	1.71
Wright	39	582	1.82

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