RANKING · 2010 CENSUS · 99 SHOWN OF 99

Highest fertility rate, Iowa counties · 2010

Iowa counties ranked by general fertility rate — births per 1,000 women ages 15-50 in the past 12 months (2023 ACS). This list covers the 99 counties in Iowa that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros ZIP codes

YEAR2010 2024

RANKPLACESTATEPOPBIRTHS PER 1,000 WOMEN (15-50)VS 2000

01Wright County, IAIA12,801111.9–

02Greene County, IAIA8,658102.2–

03Adams County, IAIA3,617101.3–

04Worth County, IAIA7,338101.3–

05Monroe County, IAIA7,406100.5–

06Van Buren County, IAIA7,13197.6–

07Davis County, IAIA9,23095.7–

08Lyon County, IAIA12,35494.7–

09Mitchell County, IAIA10,65094.3–

10Mahaska County, IAIA21,88089.5–

11Boone County, IAIA26,79986.1–

12O'Brien County, IAIA14,22085.2–

13Ringgold County, IAIA4,64284.7–

14Appanoose County, IAIA12,07784.2–

15Chickasaw County, IAIA11,66380.4–

16Crawford County, IAIA16,23780.2–

17Dallas County, IAIA118,45779.9–

18Floyd County, IAIA14,90179.5–

19Carroll County, IAIA20,30379.5–

20Sac County, IAIA9,52578.7–

21Henry County, IAIA19,34977.2–

22Dubuque County, IAIA99,38176.5–

23Shelby County, IAIA11,68976.2–

24Fayette County, IAIA19,04775.2–

25Fremont County, IAIA6,52274.6–

26Calhoun County, IAIA9,56273.3–

27Dickinson County, IAIA18,07772.7–

28Hardin County, IAIA16,45572.2–

29Lucas County, IAIA8,84771.9–

30Howard County, IAIA9,41571.8–

31Grundy County, IAIA12,36171.2–

32Des Moines County, IAIA38,07770.7–

33Clayton County, IAIA16,84569.9–

34Cass County, IAIA12,96069.6–

35Ida County, IAIA6,77769.5–

36Washington County, IAIA22,66769.3–

37Hamilton County, IAIA14,94469.0–

38Marshall County, IAIA39,89068.6–

39Buchanan County, IAIA20,88368.5–

40Iowa County, IAIA16,50467.6–

41Buena Vista County, IAIA20,44967.0–

42Wapello County, IAIA35,21066.2–

43Woodbury County, IAIA106,64964.3–

44Benton County, IAIA26,00464.0–

45Tama County, IAIA16,79663.9–

46Monona County, IAIA8,53963.8–

47Page County, IAIA14,85663.8–

48Pottawattamie County, IAIA92,99663.3–

49Montgomery County, IAIA10,00262.9–

50Jasper County, IAIA38,15362.4–

51Wayne County, IAIA6,73862.3–

52Clay County, IAIA16,20261.9–

53Sioux County, IAIA36,77461.6–

54Linn County, IAIA232,02861.0–

55Louisa County, IAIA10,41660.8–

56Plymouth County, IAIA25,69760.7–

57Jones County, IAIA21,25359.7–

58Black Hawk County, IAIA131,53259.3–

59Scott County, IAIA175,25958.8–

60Emmet County, IAIA9,10758.3–

61Osceola County, IAIA5,98057.4–

62Polk County, IAIA516,54657.2–

63Cerro Gordo County, IAIA42,37256.8–

64Mills County, IAIA14,79356.1–

65Lee County, IAIA32,30655.8–

66Allamakee County, IAIA14,23853.2–

67Butler County, IAIA14,04953.2–

68Kossuth County, IAIA14,32253.1–

69Bremer County, IAIA25,29652.7–

70Cedar County, IAIA18,35952.1–

71Taylor County, IAIA5,83551.5–

72Marion County, IAIA34,19251.2–

73Clinton County, IAIA46,00251.1–

74Cherokee County, IAIA11,36951.1–

75Muscatine County, IAIA41,85350.5–

76Johnson County, IAIA160,04448.8–

77Delaware County, IAIA17,67448.8–

78Adair County, IAIA7,40348.2–

79Palo Alto County, IAIA8,89947.2–

80Harrison County, IAIA14,62346.9–

81Jackson County, IAIA19,28845.9–

82Keokuk County, IAIA9,79745.6–

83Franklin County, IAIA9,86845.1–

84Guthrie County, IAIA10,78244.8–

85Webster County, IAIA36,83844.6–

86Audubon County, IAIA5,50944.5–

87Warren County, IAIA57,33143.9–

88Story County, IAIA101,29143.8–

89Union County, IAIA11,82939.2–

90Hancock County, IAIA10,52838.8–

91Poweshiek County, IAIA18,36838.5–

92Pocahontas County, IAIA6,81938.1–

93Winneshiek County, IAIA19,73337.8–

94Jefferson County, IAIA15,29135.6–

95Decatur County, IAIA7,65535.5–

96Humboldt County, IAIA9,40934.4–

97Madison County, IAIA17,27030.4–

98Winnebago County, IAIA10,25130.4–

99Clarke County, IAIA9,57428.7–

SHOWING 1–99 OF 99

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UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES