RANKING · 2010 CENSUS · 99 SHOWN OF 99

Lowest fertility rate, Iowa counties · 2010

Iowa counties with the lowest 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

01Clarke County, IAIA9,57428.7–

02Winnebago County, IAIA10,25130.4–

03Madison County, IAIA17,27030.4–

04Humboldt County, IAIA9,40934.4–

05Decatur County, IAIA7,65535.5–

06Jefferson County, IAIA15,29135.6–

07Winneshiek County, IAIA19,73337.8–

08Pocahontas County, IAIA6,81938.1–

09Poweshiek County, IAIA18,36838.5–

10Hancock County, IAIA10,52838.8–

11Union County, IAIA11,82939.2–

12Story County, IAIA101,29143.8–

13Warren County, IAIA57,33143.9–

14Audubon County, IAIA5,50944.5–

15Webster County, IAIA36,83844.6–

16Guthrie County, IAIA10,78244.8–

17Franklin County, IAIA9,86845.1–

18Keokuk County, IAIA9,79745.6–

19Jackson County, IAIA19,28845.9–

20Harrison County, IAIA14,62346.9–

21Palo Alto County, IAIA8,89947.2–

22Adair County, IAIA7,40348.2–

23Delaware County, IAIA17,67448.8–

24Johnson County, IAIA160,04448.8–

25Muscatine County, IAIA41,85350.5–

26Cherokee County, IAIA11,36951.1–

27Clinton County, IAIA46,00251.1–

28Marion County, IAIA34,19251.2–

29Taylor County, IAIA5,83551.5–

30Cedar County, IAIA18,35952.1–

31Bremer County, IAIA25,29652.7–

32Kossuth County, IAIA14,32253.1–

33Butler County, IAIA14,04953.2–

34Allamakee County, IAIA14,23853.2–

35Lee County, IAIA32,30655.8–

36Mills County, IAIA14,79356.1–

37Cerro Gordo County, IAIA42,37256.8–

38Polk County, IAIA516,54657.2–

39Osceola County, IAIA5,98057.4–

40Emmet County, IAIA9,10758.3–

41Scott County, IAIA175,25958.8–

42Black Hawk County, IAIA131,53259.3–

43Jones County, IAIA21,25359.7–

44Plymouth County, IAIA25,69760.7–

45Louisa County, IAIA10,41660.8–

46Linn County, IAIA232,02861.0–

47Sioux County, IAIA36,77461.6–

48Clay County, IAIA16,20261.9–

49Wayne County, IAIA6,73862.3–

50Jasper County, IAIA38,15362.4–

51Montgomery County, IAIA10,00262.9–

52Pottawattamie County, IAIA92,99663.3–

53Page County, IAIA14,85663.8–

54Monona County, IAIA8,53963.8–

55Tama County, IAIA16,79663.9–

56Benton County, IAIA26,00464.0–

57Woodbury County, IAIA106,64964.3–

58Wapello County, IAIA35,21066.2–

59Buena Vista County, IAIA20,44967.0–

60Iowa County, IAIA16,50467.6–

61Buchanan County, IAIA20,88368.5–

62Marshall County, IAIA39,89068.6–

63Hamilton County, IAIA14,94469.0–

64Washington County, IAIA22,66769.3–

65Ida County, IAIA6,77769.5–

66Cass County, IAIA12,96069.6–

67Clayton County, IAIA16,84569.9–

68Des Moines County, IAIA38,07770.7–

69Grundy County, IAIA12,36171.2–

70Howard County, IAIA9,41571.8–

71Lucas County, IAIA8,84771.9–

72Hardin County, IAIA16,45572.2–

73Dickinson County, IAIA18,07772.7–

74Calhoun County, IAIA9,56273.3–

75Fremont County, IAIA6,52274.6–

76Fayette County, IAIA19,04775.2–

77Shelby County, IAIA11,68976.2–

78Dubuque County, IAIA99,38176.5–

79Henry County, IAIA19,34977.2–

80Sac County, IAIA9,52578.7–

81Carroll County, IAIA20,30379.5–

82Floyd County, IAIA14,90179.5–

83Dallas County, IAIA118,45779.9–

84Crawford County, IAIA16,23780.2–

85Chickasaw County, IAIA11,66380.4–

86Appanoose County, IAIA12,07784.2–

87Ringgold County, IAIA4,64284.7–

88O'Brien County, IAIA14,22085.2–

89Boone County, IAIA26,79986.1–

90Mahaska County, IAIA21,88089.5–

91Mitchell County, IAIA10,65094.3–

92Lyon County, IAIA12,35494.7–

93Davis County, IAIA9,23095.7–

94Van Buren County, IAIA7,13197.6–

95Monroe County, IAIA7,406100.5–

96Worth County, IAIA7,338101.3–

97Adams County, IAIA3,617101.3–

98Greene County, IAIA8,658102.2–

99Wright County, IAIA12,801111.9–

SHOWING 1–99 OF 99

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