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zipcodes.pro — CITY/IA/KESWICK

Keswick ZIP code, Iowa

The ZIP code for Keswick, IA is 50136, and its area code is 319.

USPS city name
1 ZIP code
Population
255
Area code
319
State
Iowa

Keswick in numbers

About 255 people live in Keswick, in 93 households. The median household income is $63,750 a year, 15% below the Iowa median of $75,059 (US: $80,734). The median owner-occupied home is valued at $89,200 (57% below the Iowa median), and median gross rent is $1,083 a month. The median age is 46.2; 21.3% of adults 25 and over hold a bachelor's degree or higher (31.4% across Iowa); the average commute takes 28 minutes.

Population255Keswick255
Households93Keswick93
Median age46.2Keswick46.2Iowa38.6US 38.9
Median household income$63,750Keswick$63,750Iowa$75,059US $80,734
Median home value$89,200Keswick$89,200Iowa$208,000US $332,700
Median gross rent$1,083Keswick$1,083Iowa$972US $1,413
Bachelor's degree or higher21.3%Keswick21.3%Iowa31.4%US 35.7%
Mean commute27.8 minKeswick27.8 minIowa19.8 minUS 26.4 min
Population density572 / sq miKeswick572 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Keswick city. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Keswick

ZIP codes with the USPS city name Keswick
ZIP City Type Population Median income Median home
50136 Keswick , IA Standard 376 $75,625 $97,800

Map of Keswick ZIP codes

50136

The ZIP codes of Keswick, IA, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Keswick

The nearest larger towns are What Cheer (580 people, 7.2 mi), South English (260 people, 7.7 mi) and Sigourney (1,954 people, 8.5 mi).

Towns near Keswick
TownPopulationDistance
Williamsburg 3,360 18.8 mi
Oskaloosa 11,504 23.7 mi
Marengo 2,725 25.2 mi
Kalona 2,692 27.9 mi

More nearby: every ZIP code in Keokuk County · Iowa ZIP codes

Cite this page

zipcodes.pro. “Keswick, IA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ia/keswick

Underlying data is public domain or openly licensed — sources, vintages and licences.