Jefferson is a city in Greene County, Iowa, home to about 4,152 people across 6.0 square miles. Its ZIP code is 50129.
Homes sold for a median of $117 per square foot in the three months ending August 2026, a buyer’s market.
Each card is that ZIP code’s whole market, including any part outside Jefferson. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Jefferson’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Des Moines International Airport (DSM)50 miles away |
|---|---|
| Closer regional airport | Fort Dodge Regional Airport (FOD)39 miles away |
| Nearest city of 250,000+ | Omaha, NE100 miles away |
| Nearest city of 1 million+ | Chicago, IL345 miles away |
Straight-line distances from the center of Jefferson; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Jefferson had 4,182 residents in the 2020 census, down 10% since 2000.
It’s the 101st largest of 1,019 towns in Iowa by population.
Greene County grew from 17,820 residents in 1900 to 8,771 in 2020.
Greene County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 83°F in summer, and winter lows average 9°F. About 35.5 inches of rain and melted snow fall in a typical year, with about 32 inches of snow.
Source: NOAA 1991–2020 climate normals, Jefferson, IA weather station (about a mile away).
2,957 jobs at 252 businesses in Greene County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
45 doctors and other health care providers list an office in Jefferson.
Nearest hospitals
Providers with an office here
| Primary care doctors | 4 |
|---|---|
| Specialist doctors | 2 |
| Dentists | 4 |
| Nurse practitioners and physician assistants | 8 |
| Mental health providers | 10 |
| Physical and occupational therapists | 7 |
| Optometrists | 3 |
| Chiropractors | 7 |
| Pharmacies | 4 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (8 nearby)
Grocery stores (2 nearby)
Pharmacies (1 nearby)
Libraries (1 nearby)
Museums (2 nearby)
Counts are within about 2 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Established in 1855.
Notable people born here
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Greene County Comm School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Greene County ElementaryJefferson | Pre-K–4 | 518 | Public | 1.0 mi |
| Greene County Middle SchoolJefferson | 5–8 | 347 | Public | 0.9 mi |
| Greene County High SchoolJefferson | 9–12 | 375 | Public | 1.6 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.