Gem County GIS Maps
Gem County, Idaho, has 19,123 residents and covers 559.8 square miles. The population grew 14.4% between the 2010 and 2020 census. More residents moved in than left over that decade. The FIPS code for Gem County is 16045.
Emmett is the county's largest population center. Gem County also includes 4 zip codes, 1 public school district and 11 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.
Gem County Trends
- Population
- 19,123▴
- Median Home Value
- $367,300▴
- K-12 Enrollment
- 2,472▾
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.
Gem 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.
Gem County Population
Gem County had 19,123 residents in 2020. That was 14.4% higher than in 2010. Gem County added 3,942 people between 2000 and 2020, which points to steady long-term growth. Emmett is the largest city in the county, but it accounts for only about 40% of the total population. The county is fairly spread out, with about 34 people per square mile. Some of the county's most populated postal areas include Emmett, Sweet and Emmett.
Population Trend in Gem County ID
Gem County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Gem County Zip Codes
Gem County has 4 zip codes. Some of the county's most populated zip codes include Emmett (83617), Sweet (83670) and Emmett (83636). Emmett is the largest zip by population, with about 17,502 residents or 92% of the county total. Together, the three largest zips account for about 95% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Gem County ID
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 83617 | Emmett | 17,502 | ▴ 13.5% |
| 83670 | Sweet | 521 | ▾ -5.8% |
| 83636 | Emmett | 211 | ▴ 37.9% |
| 83657 | Ola | 194 | ▴ 11.5% |
| Download all zip code data | |||
Gem County Zip Code populations and trends per most recent census data.
Gem County Demographics
Gem County has a median age of 42.8, which makes the county a little older than Idaho overall. About 22.4% of residents are under 18, while 22.7% 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 27.7% of the population, which points to a solid working-age base. About 22.3% of adults have a bachelor's degree or higher, above the statewide figure of 31.2%. The county is mostly White by population, though Hispanic, Asian, Black and multiracial residents are also part of the local mix.
Key Demographics for Gem County ID
Median Age
42.8
Under 18
22.4%
Age 65+
22.7%
Bachelor's+
22.3%
Gem County School Districts
Gem County is served by 1 public school district with 2,472 students enrolled in 2024. Several larger districts account for a substantial share of students across the county map area. Those three districts account for about 100% 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 Gem County ID
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Emmett Independent School District 221 | 2,472 | 100% | ▾ -3.7% |
| Download all school district data | |||
Gem County school district enrollment and trends per most recent NCES reporting data.
Gem County Housing & Real Estate
Gem County has a median home value of $367,300 and a median gross rent of $887. 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 Idaho median, while rents come in below the state average. In March 2026, the median listing price was $699,450 and homes spent about 41 days on the market.
Gem County Housing Mix
Gem County housing mix: owner, renter and vacant units.
Gem County Housing Trends
Gem County median home value and rent trend (last 5 years).
Businesses in Gem County, ID
Gem County has 733 business listings across 311 categories. The largest categories in Gem County business listings are Farm (24, 3.3%), Churches & Religious Organizations (20, 2.7%), and Contractors (16, 2.2%). The full Gem County business listings dataset includes names, categories, addresses and contact details where available. Gem County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Gem County, ID
| Category | Businesses | Share |
|---|---|---|
| Farm | 24 | 3.3% |
| Churches & Religious Organizations | 20 | 2.7% |
| Contractors | 16 | 2.2% |
| Professional Services | 11 | 1.5% |
| Gas Stations | 10 | 1.4% |
| Event Planning | 10 | 1.4% |
| Auto Repair | 10 | 1.4% |
| Convenience Stores | 10 | 1.4% |
| Beauty Salons | 9 | 1.2% |
| Parks & Recreation | 9 | 1.2% |
Gem County Business Listings
| Business | Category | City |
|---|---|---|
| Emmett Family Services | Abuse And Addiction Treatment | Emmett |
| Black Canyon Dam | Active Life | Emmett |
| Xanadoos at Carlock and Company | Advertising Agency | Emmett |
| Sage Ag Labs | Agricultural Service | Sweet |
| BS Farm Idaho LLC | Agriculture | Caldwell |
| Emmett Municipal Airport | Airport | Emmett |
| Roe Ann Drive-In | American Restaurants | Emmett |
| Rising Sun Ranch | Amusement Park | Emmett |
| Sunset Grooming & Boarding | Animal Shelters | Emmett |
| The Packing Shed Idaho | Antique Store | Emmett |
| Download Gem County business listings | ||
Gem County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Gem County Basemaps
Gem 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 Gem County Data Package
This page shows a preview of what's included in the Gem 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.
One-time · instant download · 30-day refund guarantee · See full package details
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 Idaho — explore the full structure before you buy.
No email or download required. Opens in a preview window on this page.
Nearby Counties
Browse county data pages for the counties that border Gem County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.