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County ZIP codes · Iowa · FIPS 19081

Hancock County, IA ZIP Codes

Hancock County, Iowa has 13 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026), all residential. 9 of the residential ones lie mainly in Hancock County and 4 mainly in a neighboring county; 9 cross the county line. Median household income ranges from $70,350 in 50438 (Garner) to $74,940 in 50436 (Forest City) (Census Bureau, ACS 2020-2024).

  • ACS2020-24
  • Census2020

Where are the ZIP codes of Hancock County?

50423 · Britt: $73k50430 · Corwith: $59k50432 · Crystal Lake: $67k50436 · Forest City: $75k50438 · Garner: $70k50439 · Goodell: $94k50447 · Kanawha: $76k50449 · Klemme: $60k50457 · Meservey: $47k50480 · Titonka: $73k50482 · Ventura: $98k50483 · Wesley: $89k50484 · Woden: $66k50423504365043850447504835043050480504495048450457504825043950423 · Britt: $73k50430 · Corwith: $59k50432 · Crystal Lake: $67k50436 · Forest City: $75k50438 · Garner: $70k50439 · Goodell: $94k50447 · Kanawha: $76k50449 · Klemme: $60k50457 · Meservey: $47k50480 · Titonka: $73k50482 · Ventura: $98k50483 · Wesley: $89k50484 · Woden: $66k50423504365043850447504835043050480504495048450457504825043950423 · Britt: $73k50430 · Corwith: $59k50432 · Crystal Lake: $67k50436 · Forest City: $75k50438 · Garner: $70k50439 · Goodell: $94k50447 · Kanawha: $76k50449 · Klemme: $60k50457 · Meservey: $47k50480 · Titonka: $73k50482 · Ventura: $98k50483 · Wesley: $89k50484 · Woden: $66k5042350436504385044750483504305048050449504845045750439
The residential ZIP codes of Hancock 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?

They carry 13 postal town names.

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

All 13 residential ZIP codes in Hancock County

9 ZIP codes lie mainly in Hancock County; 4 more reach into it from a neighboring county and follow the first table.

Residential ZIP codes mainly in Hancock County, largest first; "In this county" is the share of the ZIP's land in the county
In this county
50438 Garner 3,995 31 $70k $198k 100%
50423 Britt 2,291 16 $73k $119k 100%
50447 Kanawha 1,145 11 $76k $87k 64%
50449 Klemme 785 19 $60k $95k 90%
50430 Corwith 520 8 $59k $76k 60%
50457 Meservey 463 14 $47k $91k 30%
50439 Goodell 454 14 $94k $80k 100%
50484 Woden 411 9 $66k $101k 64%
50432 Crystal Lake 283 651 $67k $100k 100%

Partly in Hancock County

Residential ZIP codes mainly in another county that reach at least 1% into Hancock County, by their share here
In this county
50436 Forest City 5,771 43 $75k $168k 42%
50483 Wesley 672 8 $89k $143k 29%
50482 Ventura 748 25 $98k $238k 22%
50480 Titonka 809 13 $73k $90k 2%

Download the 13 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?

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

Share of each ZIP code's land in Hancock County and in the neighboring counties
ZIPIn HancockElsewhere
5043642%Winnebago County58%
5044764%Wright County36%
504802%Kossuth County97%; Winnebago County1%
5044990%Cerro Gordo County10%
5048222%Cerro Gordo County78%
5048329%Kossuth County71%
5043060%Kossuth County37%; Wright County2%; Humboldt County1%
5045730%Cerro Gordo County30%; Franklin County28%; Wright County12%
5048464%Winnebago County33%; Kossuth County2%

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

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

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Hancock County starts with 504.

Three-digit prefixes of Hancock 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 Hancock County's
PrefixSectional centerHereAll codes
504Waterloo, IA (SCF 506)1357

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