County ZIP codes · Iowa · FIPS 19009

Audubon County, IA ZIP Codes

Audubon County, Iowa has 12 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 6 of the residential ones lie mainly in Audubon County and 6 mainly in a neighboring county; 9 cross the county line. Median household income ranges from $52,438 in 50025 (Audubon) to $80,119 in 50058 (Coon Rapids) (Census Bureau, ACS 2020-2024).

ACS2020-24
Census2020

Where are the ZIP codes of Audubon County?

The residential ZIP codes of Audubon County (whole outlines, including the parts in neighboring counties), shaded by median household income in national fifths (ACS 2020-2024). <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are its ZIP codes?

50025 · $52k 50058 · $80k

The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $55,313 and $76,786.

They carry 12 postal town names.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).

All 12 residential ZIP codes in Audubon County

6 ZIP codes lie mainly in Audubon County; 6 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Audubon County, largest first; "In this county" is the share of the ZIP's land in the county
						In this county
50025	Audubon	3,148	16	$52k	$118k	98%
50076	Exira	1,301	12	$55k	$114k	99%
51543	Kimballton	478	22	$72k	$163k	70%
50042	Brayton	226	7	$93k	$161k	98%
50117	Hamlin	128	5	$104k	$223k	100%
50110	Gray	29	45	$57k	$45k	100%

Partly in Audubon County

Residential ZIP codes mainly in another county that reach at least 1% into Audubon County, by their share here
						In this county
51531	Elk Horn	889	33	$59k	$132k	21%
51455	Manning	2,279	20	$77k	$132k	18%
50058	Coon Rapids	1,999	14	$80k	$150k	12%
50020	Anita	1,197	12	$75k	$155k	10%
50022	Atlantic	8,526	49	$63k	$158k	7%
50002	Adair	1,496	14	$79k	$238k	1%

Download the 12 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).

Which ZIP codes cross the county line?

10 ZIP codes of Audubon County extend into another county. A ZIP code follows mail routes, not county borders.

Share of each ZIP code's land in Audubon County and in the neighboring counties
ZIP	In Audubon	Elsewhere
50022	7%	Cass County 89%; Shelby County 4%
50025	98%	Guthrie County 2%
51455	18%	Carroll County 56%; Crawford County 23%; Shelby County 3%
50058	12%	Guthrie County 39%; Carroll County 39%; Greene County 10%
50002	1%	Guthrie County 53%; Adair County 45%
50076	99%
50020	10%	Cass County 77%; Adair County 12%; Guthrie County 1%
51531	21%	Shelby County 79%
51543	70%	Shelby County 30%
50042	98%	Cass County 2%

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).

Which first three digits do Audubon County's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Audubon County's ZIP codes use 4 prefixes: 500, 501, 514 and 515.

Three-digit prefixes of Audubon County's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Audubon County's
Prefix	Sectional center	Here	All codes
500	Des Moines, IA (SCF 500)	7	68
501	Des Moines, IA (SCF 500)	2	69
514	Des Moines, IA (SCF 500)	1	32
515	Omaha, NE (SCF 680)	2	57

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.