Harrison County GIS Maps

Harrison County Maps

The maps below show a few of the county map styles included in our downloads. County packages include map exports in JPEG, PNG, SVG, PDF and GeoTIFF formats plus more than 20 GIS layers for mapping, research and analysis. Available layers include zip codes, area codes, subdivisions, school districts, political boundaries, roads, water features, points of interest and more.

County packages also include historical county demographics, business intelligence, analytical dashboards, AI-ready prompts, markdown files and related reference data. Everything is organized to save hours of manual work collecting current data, cleaning it and joining it together. That makes it easier to move faster on analytics, due diligence, business planning and location research. Paid packages are built for commercial use, but some package contents include source-specific attribution or notice guidance. Review Licensing & Data Source Notices.

Harrison County Parcels

Harrison County has 25,257 mapped parcels covering 442,667 acres. The median assessed value is $73,500. The median lot size is 23.90 acres. 12,178 parcels are 10 acres or larger. The records carry 7,733 distinct owner names. Owner names and assessed values are on nearly every parcel. Lot sizes reach 76.3%. Browse the interactive Harrison County Parcel viewer here.

Harrison County Parcel Data Coverage

Field coverage measured across all Harrison County parcel records. Download free sample data here.

Harrison County Population

Harrison County had 14,582 residents in 2020. That was 2.3% lower than in 2010. Harrison County had 1,084 fewer people in 2020 than it did in 2000, which points to a long-term population decline. The county is fairly spread out, with about 21 people per square mile. Some of the county's most populated postal areas include Missouri Valley, Logan and Woodbine.

Population Trend in Harrison County IA

Harrison County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.

Harrison County Zip Codes

Harrison County has 10 zip codes. Some of the county's most populated zip codes include Missouri Valley (51555), Logan (51546) and Woodbine (51579). Missouri Valley is the largest zip by population, with about 5,099 residents or 35% of the county total. Together, the three largest zips account for about 71% of all county residents based on 2020 population estimates.

Most Populated Zip Codes in Harrison County IA

Harrison County Zip Code populations and trends per most recent census data.

Harrison County Demographics

Harrison County has a median age of 41.9, which makes the county a little older than Iowa overall. About 23.1% of residents are under 18, while 19.7% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is 25 to 44 at about 28.4% of the population, which points to a solid working-age base. About 21.2% of adults have a bachelor's degree or higher, above the statewide figure of 30.9%. The county is mostly White by population, though Hispanic, Asian, Black and multiracial residents are also part of the local mix.

Key Demographics for Harrison County IA

Harrison County School Districts

Harrison County is served by 9 public school districts with 6,327 students enrolled in 2024. The largest districts on the county map are Harlan Community, AHSTW Community and Missouri Valley Community. Those three districts account for about 47% of public school enrollment in the map area. Total enrollment has stayed fairly steady in recent years, based on district totals from 2017 to 2024.

Largest School Districts by Enrollment in Harrison County IA

Harrison County school district enrollment and trends per most recent NCES reporting data.

Harrison County Housing & Real Estate

Harrison County has a median home value of $165,300 and a median gross rent of $854. About 77% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run below the Iowa median, while rents come in below the state average. In March 2026, the median listing price was $235,475 and homes spent about 65 days on the market.

Businesses in Harrison County, IA

Harrison County has 695 business listings across 267 categories. The largest categories in Harrison County business listings are Churches & Religious Organizations (26, 3.7%), Parks & Recreation (17, 2.4%), and Auto Repair (15, 2.2%). The full Harrison County business listings dataset includes names, categories, addresses and contact details where available. Harrison County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.

Top Business Categories in Harrison County, IA

Harrison County Business Listings

Harrison County business listings sourced from Overture Maps. Includes locations with a high level of confidence.

Harrison County Basemaps

Harrison County map and data packages include a set of useful basemaps to help you get started quickly. These include a custom light grey canvas, USGS topo, imagery and other reference layers that make it easier to build clear, meaningful county maps using the included GIS layers, your own data or both. Pre-rendered map tiles for the light grey basemap are included so you can use them offline or host them on your own CDN.

Preview a Live Package Demo

See exactly what is included in a county data package. Inspect how files are organized, the interactive data explorer and how maps and analytics are laid out. The demo loads a real sample package from Iowa — explore the full structure before you buy.