Denison is a city in Crawford County, Iowa, home to about 8,260 people across 6.5 square miles. Its ZIP code is 51442.
Homes sold for a median of $95 per square foot in the three months ending August 2026, a balanced market.
Each card is that ZIP code’s whole market, including any part outside Denison. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Denison’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Eppley Airfield (OMA)57 miles away |
|---|---|
| Nearest city of 250,000+ | Omaha, NE63 miles away |
| Nearest city of 1 million+ | Chicago, IL395 miles away |
Straight-line distances from the center of Denison; 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.
Denison had 8,373 residents in the 2020 census, up 14% since 2000.
It’s the 49th largest of 1,019 towns in Iowa by population.
Crawford County grew from 21,685 residents in 1900 to 16,525 in 2020.
Crawford 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 10°F. About 33.6 inches of rain and melted snow fall in a typical year, with about 35 inches of snow.
Source: NOAA 1991–2020 climate normals, Denison, IA weather station (2 miles away).
5,121 jobs at 415 businesses in Crawford County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
54 doctors and other health care providers list an office in Denison.
Nearest hospitals
Providers with an office here
| Primary care doctors | 8 |
|---|---|
| Specialist doctors | 4 |
| Dentists | 5 |
| Nurse practitioners and physician assistants | 10 |
| Mental health providers | 10 |
| Physical and occupational therapists | 5 |
| Optometrists | 6 |
| Chiropractors | 6 |
| Pharmacies | 3 |
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 (10 nearby)
Grocery stores (3 nearby)
Pharmacies (1 nearby)
Libraries (1 nearby)
Theaters and performance venues (1 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.
Public schools here are run by Denison Comm School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Denison Elementary SchoolDenison | Pre-K–3 | 691 | Public | 1.1 mi |
| Broadway Elementary SchoolDenison | 4–5 | 288 | Public | 0.7 mi |
| Denison Middle SchoolDenison | 6–8 | 502 | Public | 1.1 mi |
| Denison High SchoolDenison | 9–12 | 777 | Public | 0.9 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| St Rose of Lima SchoolDenison | Pre-K–5 | 95 | Roman Catholic | 0.4 mi |
| Zion Lutheran SchoolDenison | Pre-K–9 | 73 | Lutheran Church–Missouri Synod | 0.3 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private 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.