Petersburg County GIS Maps
Petersburg County, Alaska, has 3,398 residents and covers 2,900.6 square miles. The FIPS code for Petersburg County is 02195. Kupreanof is the county's largest population center. Petersburg County also includes 1 zip code, 1 public school district and 4 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.
Petersburg County Trends
- Population
- 3,398—
- Median Home Value
- $301,300▴
- K-12 Enrollment
- 464▾
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.
Petersburg 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.
Petersburg County Population
Petersburg County had 3,398 residents in 2020. Recent census data shows how the county has changed over time. Long-term census counts show how the county has changed across recent decades. Kupreanof is the largest city in the county, but it accounts for only about 1% of the total population. The county is fairly spread out, with about 1 people per square mile. One of the county's most populated postal areas is Petersburg.
Population Trend in Petersburg County AK
Petersburg County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Petersburg County Zip Codes
Petersburg County has 1 zip codes. One of the county's most populated zip codes is Petersburg (99833). Petersburg is the largest zip by population, with about 3,393 residents or 100% of the county total. Together, the three largest zips account for about 100% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Petersburg County AK
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 99833 | Petersburg | 3,393 | ▴ 6% |
| Download all zip code data | |||
Petersburg County Zip Code populations and trends per most recent census data.
Petersburg County Demographics
Petersburg County has a median age of 45.7, which makes the county a little older than Alaska overall. About 19.2% of residents are under 18, while 22% 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 29.2% of the population, which points to a solid working-age base. About 27.5% of adults have a bachelor's degree or higher, above the statewide figure of 31.2%. The county is majority White by population, with Hispanic, Asian, Black and multiracial residents making up a meaningful share of the local mix.
Key Demographics for Petersburg County AK
Median Age
45.7
Under 18
19.2%
Age 65+
22%
Bachelor's+
27.5%
Petersburg County School Districts
Petersburg County is served by 1 public school district with 464 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 Petersburg County AK
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Petersburg Borough School District | 464 | 100% | ▾ -2.5% |
| Download all school district data | |||
Petersburg County school district enrollment and trends per most recent NCES reporting data.
Petersburg County Housing & Real Estate
Petersburg County has a median home value of $301,300 and a median gross rent of $1,208. About 71% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run below the Alaska median, while rents come in below the state average. In March 2026, the median listing price was $340,000 and homes spent about 177 days on the market.
Petersburg County Housing Mix
Petersburg County housing mix: owner, renter and vacant units.
Petersburg County Housing Trends
Petersburg County median home value and rent trend (last 5 years).
Businesses in Petersburg County, AK
Petersburg County has 197 business listings across 117 categories. The largest categories in Petersburg County business listings are Structure And Geography (19, 9.6%), Churches & Religious Organizations (9, 4.6%), and Landmark And Historical Building (6, 3.0%). The full Petersburg County business listings dataset includes names, categories, addresses and contact details where available. Petersburg County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Petersburg County, AK
| Category | Businesses | Share |
|---|---|---|
| Structure And Geography | 19 | 9.6% |
| Churches & Religious Organizations | 9 | 4.6% |
| Landmark And Historical Building | 6 | 3.0% |
| Flowers & Gifts | 5 | 2.5% |
| Public And Government Association | 4 | 2.0% |
| Coffee Shops | 4 | 2.0% |
| Lake | 4 | 2.0% |
| Community & Nonprofits | 4 | 2.0% |
| Bed And Breakfast | 4 | 2.0% |
| Parks & Recreation | 4 | 2.0% |
Petersburg County Business Listings
| Business | Category | City |
|---|---|---|
| Alaska Airlines - Petersburg James A Johnson Airport PSG | Airline | Petersburg |
| Petersburg Airport | Airport | Petersburg |
| FireLight Gallery & Framing | Art Gallery | Petersburg |
| Five Finger Studio | Arts And Crafts | Petersburg |
| Seaweed Studio | Arts And Entertainment | Petersburg |
| The Art Loft | Art School | Petersburg |
| Green Rocks | Attractions And Activities | Petersburg Borough |
| Tucker Services | Auto Repair | Petersburg |
| NAPA Auto Parts | Auto Parts And Supply Store | Petersburg |
| Wells Fargo Bank | Banks & Credit Unions | Petersburg |
| Download Petersburg County business listings | ||
Petersburg County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Petersburg County Basemaps
Petersburg 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 Petersburg County Data Package
This page shows a preview of what's included in the Petersburg 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 Petersburg County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.