Snyder County GIS Maps
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Snyder County, Pennsylvania, has 39,736 residents and covers 328.8 square miles. The population grew 0.1% between the 2010 and 2020 census. More residents moved in than left over that decade. The FIPS code for Snyder County is 42109.
Selinsgrove is the county's largest population center. Snyder County also includes 12 zip codes, 2 public school districts and 35 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.
Snyder County Trends
- Population
- 39,736▴
- Median Home Value
- $205,500▴
- K-12 Enrollment
- 4,190▾
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.
Snyder 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.
Snyder County Population
Snyder County had 39,736 residents in 2020. That was 0.1% higher than in 2010. Snyder County added 2,190 people between 2000 and 2020, which points to steady long-term growth. Selinsgrove is the largest city in the county, but it accounts for only about 14% of the total population. The county is fairly spread out, with about 121 people per square mile. Some of the county's most populated postal areas include Selinsgrove, Middleburg and Mount Pleasant Mills.
Population Trend in Snyder County PA
Snyder County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Snyder County Zip Codes
Snyder County has 12 zip codes. Some of the county's most populated zip codes include Selinsgrove (17870), Middleburg (17842) and Mount Pleasant Mills (17853). Selinsgrove is the largest zip by population, with about 14,730 residents or 37% of the county total. Together, the three largest zips account for about 67% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Snyder County PA
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 17870 | Selinsgrove | 14,730 | ▴ 1.1% |
| 17842 | Middleburg | 8,631 | ▾ -3.1% |
| 17853 | Mount Pleasant Mills | 3,073 | ▾ -4.6% |
| 17889 | Winfield | 2,979 | ▴ 8.9% |
| 17864 | Port Trevorton | 2,476 | ▴ 1.3% |
| Download all zip code data | |||
Snyder County Zip Code populations and trends per most recent census data.
Snyder County Demographics
Snyder County has a median age of 40.5, which makes the county a little younger than Pennsylvania overall. About 20.6% of residents are under 18, while 20% 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 27.5% of the population, which points to a solid working-age base. About 21.4% of adults have a bachelor's degree or higher, above the statewide figure of 34.5%. The county is mostly White by population, though Hispanic, Asian, Black and multiracial residents are also part of the local mix.
Key Demographics for Snyder County PA
Median Age
40.5
Under 18
20.6%
Age 65+
20%
Bachelor's+
21.4%
Snyder County School Districts
Snyder County is served by 2 public school districts with 4,190 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, but it is slightly lower than it was in 2017.
Largest School Districts by Enrollment in Snyder County PA
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Selinsgrove Area School District | 2,283 | 54.5% | ▾ -2.9% |
| Midd-West School District | 1,907 | 45.5% | ▾ -2.8% |
| Download all school district data | |||
Snyder County school district enrollment and trends per most recent NCES reporting data.
Snyder County Housing & Real Estate
Snyder County has a median home value of $205,500 and a median gross rent of $890. About 74% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run below the Pennsylvania median, while rents come in below the state average. In March 2026, the median listing price was $365,950 and homes spent about 45 days on the market.
Snyder County Housing Mix
Snyder County housing mix: owner, renter and vacant units.
Snyder County Housing Trends
Snyder County median home value and rent trend (last 5 years).
Businesses in Snyder County, PA
Snyder County has 1,772 business listings across 441 categories. The largest categories in Snyder County business listings are Churches & Religious Organizations (79, 4.5%), Auto Repair (52, 2.9%), and Contractors (29, 1.6%). The full Snyder County business listings dataset includes names, categories, addresses and contact details where available. Snyder County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Snyder County, PA
| Category | Businesses | Share |
|---|---|---|
| Churches & Religious Organizations | 79 | 4.5% |
| Auto Repair | 52 | 2.9% |
| Contractors | 29 | 1.6% |
| Beauty Salons | 28 | 1.6% |
| Banks & Credit Unions | 25 | 1.4% |
| Insurance Agencies | 22 | 1.2% |
| Gas Stations | 20 | 1.1% |
| Farm | 20 | 1.1% |
| Discount Store | 19 | 1.1% |
| Pizza Restaurants | 19 | 1.1% |
Snyder County Business Listings
| Business | Category | City |
|---|---|---|
| On Fire Promotions | 3D Printing Service | Shamokin Dam |
| Susquehanna University Bookstore | Academic Bookstore | Selinsgrove |
| Gingrich & Associates, P.C. | Accountant | Freeburg |
| Isle of Que Adventures | Active Life | Selinsgrove |
| A1 Advertising Specialties | Advertising Agency | Middleburg |
| Stoney Acres Produce Supplies | Agricultural Service | Port Trevorton |
| John's Carpet & Air Duct Cleaning | Air Duct Cleaning Service | Selinsgrove |
| Penn Valley Airport | Airport | Selinsgrove |
| Perkins Restaurant & Bakery | American Restaurants | Selinsgrove |
| Hoopla's Xtreme Family Fun | Amusement Park | Shamokin Dam |
| Download Snyder County business listings | ||
Snyder County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Snyder County Basemaps
Snyder 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 Snyder County Data Package
This page shows a preview of what's included in the Snyder 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 Snyder County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.