Sac County GIS Maps
Sac County, Iowa, has 9,814 residents and covers 575 square miles. The population declined 5.2% between the 2010 and 2020 census. More residents left than arrived over that decade. The FIPS code for Sac County is 19161.
Sac City is the county's largest population center. Sac County also includes 8 zip codes, 7 public school districts and 32 municipalities. Those boundaries help explain why population, schools, and housing can look different from one part of the county to another. The map below shows how those county lines, zip codes, and school districts fit together, and the sections that follow use that same geography to show population, demographics, school enrollment and housing patterns in more detail.
Maps, GIS layers and sample data. Paid packages add full layers, analytics and database files.
Sac County Trends
- Population
- 9,814▾
- Median Home Value
- $138,400▴
- K-12 Enrollment
- 6,905▾
County analytics dashboards with historical trends & projections included in package downloads.
Free starter access previews county maps, lightweight GIS, and sample data. Paid packages unlock full GIS layers, analytics, and database files.
Sac 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.
Sac County Population
Sac County had 9,814 residents in 2020. That was 5.2% lower than in 2010. Sac County had 1,715 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 17 people per square mile. Some of the county's most populated postal areas include Sac City, Carnarvon and Odebolt.
Population Trend in Sac County IA
Sac County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Sac County Zip Codes
Sac County has 8 zip codes. Some of the county's most populated zip codes include Sac City (50583), Carnarvon (51450) and Odebolt (51458). Sac City is the largest zip by population, with about 2,642 residents or 27% of the county total. Together, the three largest zips account for about 57% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Sac County IA
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 50583 | Sac City | 2,642 | ▾ -7.5% |
| 51450 | Carnarvon | 1,475 | ▾ -6.8% |
| 51458 | Odebolt | 1,451 | ▾ -1.1% |
| 51466 | Wall Lake | 1,071 | ▾ -1.9% |
| 51053 | Schaller | 1,069 | ▾ -7.9% |
| Download all zip code data | |||
Sac County Zip Code populations and trends per most recent census data.
Sac County Demographics
Sac County has a median age of 45.3, which makes the county a little older than Iowa overall. About 22.3% of residents are under 18, while 23.9% 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 25.6% 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 Sac County IA
Median Age
45.3
Under 18
22.3%
Age 65+
23.9%
Bachelor's+
21.2%
Sac County School Districts
Sac County is served by 7 public school districts with 6,905 students enrolled in 2024. The largest districts on the county map are Storm Lake Community, Odebolt Arthur Battle Creek Ida Grove Community and South Central Calhoun Community. Those three districts account for about 69% of public school enrollment in the map area. Total enrollment has grown modestly since 2017 across the districts shown on the county map.
Largest School Districts by Enrollment in Sac County IA
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Storm Lake Community School District | 2,933 | 42.5% | ▴ 2.4% |
| Odebolt Arthur Battle Creek Ida Grove Community School District | 934 | 13.5% | ▾ -1.4% |
| South Central Calhoun Community School District | 912 | 13.2% | ▾ -0.3% |
| East Sac County Community School District | 777 | 11.3% | ▾ -6.5% |
| Newell-Fonda Community School District | 542 | 7.8% | ▾ -2.5% |
| Download all school district data | |||
Sac County school district enrollment and trends per most recent NCES reporting data.
Sac County Housing & Real Estate
Sac County has a median home value of $138,400 and a median gross rent of $643. About 78% 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 $204,725 and homes spent about 95 days on the market.
Sac County Housing Mix
Sac County housing mix: owner, renter and vacant units.
Sac County Housing Trends
Sac County median home value and rent trend (last 5 years).
Businesses in Sac County, IA
Sac County has 494 business listings across 211 categories. The largest categories in Sac County business listings are Churches & Religious Organizations (27, 5.5%), Insurance Agencies (13, 2.6%), and Gas Stations (10, 2.0%). The full Sac County business listings dataset includes names, categories, addresses and contact details where available. Sac County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Sac County, IA
| Category | Businesses | Share |
|---|---|---|
| Churches & Religious Organizations | 27 | 5.5% |
| Insurance Agencies | 13 | 2.6% |
| Gas Stations | 10 | 2.0% |
| Shipping Center | 9 | 1.8% |
| Convenience Stores | 8 | 1.6% |
| Beauty Salons | 8 | 1.6% |
| Libraries | 8 | 1.6% |
| Car Dealerships | 8 | 1.6% |
| Medical Offices | 8 | 1.6% |
| Retirement Home | 7 | 1.4% |
Sac County Business Listings
| Business | Category | City |
|---|---|---|
| Amusement Devices and Manufacturing | Active Life | Schaller |
| Heartland Marketing Group | Advertising Agency | Early |
| Hallett Materials, a CRH Company | Aggregate Supplier | Wall Lake |
| Dettman Implement Co | Agricultural Service | Sac City |
| TerraplexAg | Agriculture | Odebolt |
| Thomson Stracke Implement | Agriculture Association | Early |
| Sac City Municipal Airport | Airport | Sac City |
| Sac County Ambulance | Ambulance And Ems Services | Sac City |
| Trailside Roadhouse | American Restaurants | Lake View |
| East Sac County Sch Recreational | Amusement Park | Wall Lake |
| Download Sac County business listings | ||
Sac County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Sac County Basemaps
Sac 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.
Get the Full Sac County Data Package
This page shows a preview of what's included in the Sac County data package. The full package gives you a ready-to-use county data system with GIS layers, historical data, maps, database files and planning tools that save hours of manual data gathering, cleanup and joins. Everything is organized to help you skip data wrangling and start analysis faster.
- 20+ GIS layers for zip codes, school districts, roads, water, boundaries and more
- Historical county demographics, housing, income and trend data
- ZIP code population files and school district enrollment history
- Database files, markdowns, AI-ready prompts and documentation
- Map exports in PNG, JPEG, PDF, SVG and GeoTIFF formats
- Offline-ready data explorer, map and analytics tools
Paid packages support commercial use, client work, and derived outputs. Some package contents may include source-specific attribution or provider notices. See Licensing & Data Source Notices.
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Nearby Counties
Browse county data pages for the counties that border Sac County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.