Zip Code 50129 — Jefferson, IA

ZIP Code 50129 is associated with Jefferson, IA, in Greene County. The listed population estimate is 5,014; estimated density is 11.7 people per square mile. Among records with population estimates, it ranks #1 of 7 in Greene County and #146 of 969 in IA.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (42.013350, -94.376400)

Data MetricLocal Statistic
Postal / Zip Code50129
Primary CityJefferson
State / ProvinceIA
CountyGreene
Total Population5,014
Population Density11.7 people/sq mi
TimezoneAmerica/Chicago

How 50129 Compares

MetricZIP 50129Greene County recordsIA records
Population estimate5,0148,631 (sum)3,210,984 (sum)
Population Density11.7 /sq mi----
County population rank#1 of 7----
State population rank#146 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 50107Grand Junction8.2 mi764
ZIP 51462Scranton9.3 mi1,049
ZIP 50064Dana9.9 mi100
ZIP 50235Rippey10.4 mi431
ZIP 50026Bagley11.4 mi481

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 →