Zip Code 50255 — Thornburg, IA

ZIP Code 50255 is associated with Thornburg, IA, in Keokuk County. The listed population estimate is 51; estimated density is 103.1 people per square mile. Among records with population estimates, it ranks #14 of 14 in Keokuk County and #948 of 969 in IA.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (41.455930, -92.332070)

Data MetricLocal Statistic
Postal / Zip Code50255
Primary CityThornburg
State / ProvinceIA
CountyKeokuk
Total Population51
Population Density103.1 people/sq mi
TimezoneAmerica/Chicago

How 50255 Compares

MetricZIP 50255Keokuk County recordsIA records
Population estimate519,120 (sum)3,210,984 (sum)
Population Density103.1 /sq mi----
County population rank#14 of 14----
State population rank#948 of 969----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in IA

ZIP CodeCityDistancePopulation estimate
ZIP 50136Keswick2.4 mi376
ZIP 50268What Cheer3.7 mi908
ZIP 50104Gibson4.0 mi103
ZIP 50027Barnes City7.3 mi148
ZIP 52355Webster7.7 mi283

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →