ZIP code 51231

51231 is in O'Brien County, Iowa.

562Residents

$108,058Median household income

$189,500Median home value

15.1Median age

34%Adults with a bachelor’s degree or higher

94%Homes lived in by their owners

1.8×Home value to household income

Other ZIP codes in O'Brien County

51346 $72,426
51248 $64,375
51245 $69,531
51046 $84,125
51058 $63,036
51022 $96,505
51009 $58,750

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Source: Census ACS 2024 ACS 5-year, ZIP code tabulation areas. ZCTAs approximate postal ZIP codes and can differ from them. Small areas carry larger margins of error.