Aroostook County GIS Maps
Aroostook County, Maine, has 67,105 residents across 25,420 parcels and covers 6,671.3 square miles. The population declined 6.6% between the 2010 and 2020 census. More residents left than arrived over that decade. The FIPS code for Aroostook County is 23003.
Presque Isle is the county's largest population center. Aroostook County also includes 41 zip codes, 32 public school districts and 85 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 parcel data, population, demographics, school enrollment and housing patterns in more detail.
Maps, GIS layers, Parcels and sample data. Paid packages add full layers, analytics and database files.
Aroostook County Trends
- Population
- 67,105▾
- Median Home Value
- $131,700▴
- K-12 Enrollment
- 8,679▾
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.
Aroostook 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.
Aroostook County Parcels
Aroostook County has 25,420 mapped parcels. Parcel boundaries and identifiers are the only fields this source publishes. Browse the interactive Aroostook County Parcel viewer here.
Aroostook County Parcel Data Coverage
| Field | Parcels | Coverage |
|---|---|---|
| Parcel ID | 25,420 | 100% |
| Owner name | 0 | 0% |
| Owner mailing address | 0 | 0% |
| Site address | 12,205 | 48.0% |
| Land use code | 0 | 0% |
| Land use description | 0 | 0% |
| Assessed value | 0 | 0% |
| Land value | 0 | 0% |
| Improvement value | 0 | 0% |
| Acreage | 0 | 0% |
| Parcel boundary | 25,420 | 100% |
| Download all Aroostook County parcels. | ||
Field coverage measured across all Aroostook County parcel records.
Aroostook County Population
Aroostook County had 67,105 residents in 2020. That was 6.6% lower than in 2010. Aroostook County had 6,833 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 10 people per square mile. Some of the county's most populated postal areas include Houlton, Caribou and Presque Isle.
Population Trend in Aroostook County ME
Aroostook County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Aroostook County Zip Codes
Aroostook County has 41 zip codes. Some of the county's most populated zip codes include Houlton (04730), Caribou (04736) and Presque Isle (04769). Houlton is the largest zip by population, with about 9,813 residents or 15% of the county total. Together, the three largest zips account for about 41% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Aroostook County ME
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 04730 | Houlton | 9,813 | ▾ -1.8% |
| 04736 | Caribou | 9,033 | ▾ -8.5% |
| 04769 | Presque Isle | 8,797 | ▾ -9.2% |
| 04743 | Fort Kent | 4,625 | ▾ -1.1% |
| 04742 | Fort Fairfield | 3,322 | ▾ -5% |
| Download all zip code data | |||
Aroostook County Zip Code populations and trends per most recent census data.
Aroostook County Demographics
Aroostook County has a median age of 48.4, which makes the county a little older than Maine overall. About 18.7% of residents are under 18, while 25.4% 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 26.4% of the population, which points to a solid working-age base. About 22.4% of adults have a bachelor's degree or higher, above the statewide figure of 35.3%. The county is mostly White by population, though Hispanic, Asian, Black and multiracial residents are also part of the local mix.
Key Demographics for Aroostook County ME
Median Age
48.4
Under 18
18.7%
Age 65+
25.4%
Bachelor's+
22.4%
Aroostook County School Districts
Aroostook County is served by 32 public school districts with 8,679 students enrolled in 2024. The largest districts on the county map are School Administrative District 01, School Administrative District 29 and Regional School Unit 39. Those three districts account for about 47% 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 Aroostook County ME
| District | Enrollment | Share | Trend |
|---|---|---|---|
| School Administrative District 01 | 1,670 | 19.2% | ▾ -0.7% |
| School Administrative District 29 | 1,214 | 14% | ▾ -3.5% |
| Regional School Unit 39 | 1,188 | 13.7% | ▾ -2.1% |
| School Administrative District 27 | 812 | 9.4% | — 0% |
| School Administrative District 70 | 500 | 5.8% | ▾ -0.4% |
| Download all school district data | |||
Aroostook County school district enrollment and trends per most recent NCES reporting data.
Aroostook County Housing & Real Estate
Aroostook County has a median home value of $131,700 and a median gross rent of $736. 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 Maine median, while rents come in below the state average. In March 2026, the median listing price was $184,900 and homes spent about 119 days on the market.
Aroostook County Housing Mix
Aroostook County housing mix: owner, renter and vacant units.
Aroostook County Housing Trends
Aroostook County median home value and rent trend (last 5 years).
Businesses in Aroostook County, ME
Aroostook County has 3,430 business listings across 510 categories. The largest categories in Aroostook County business listings are Churches & Religious Organizations (84, 2.4%), Lake (82, 2.4%), and Convenience Stores (81, 2.4%). The full Aroostook County business listings dataset includes names, categories, addresses and contact details where available. Aroostook County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Aroostook County, ME
| Category | Businesses | Share |
|---|---|---|
| Churches & Religious Organizations | 84 | 2.4% |
| Lake | 82 | 2.4% |
| Convenience Stores | 81 | 2.4% |
| Farm | 68 | 2.0% |
| Auto Repair | 61 | 1.8% |
| Gas Stations | 61 | 1.8% |
| Community & Nonprofits | 55 | 1.6% |
| Public And Government Association | 54 | 1.6% |
| Propane Supplier | 51 | 1.5% |
| Landmark And Historical Building | 50 | 1.5% |
Aroostook County Business Listings
| Business | Category | City |
|---|---|---|
| Groups Recover Together | Abuse And Addiction Treatment | Houlton |
| Twin Peaks Lodge | Accommodation | St David |
| Chester M. Kearney | Accountant | Houlton |
| Southern Aroostook Action Sports | Active Life | Linneus |
| Outdoor Extreme INC | Adventure Sports Center | Ashland |
| Aroostook Republican | Advertising Agency | Caribou |
| Maine Potato Board | Agricultural Cooperatives | Presque Isle |
| County Ag & Turf Supply | Agricultural Service | Caribou |
| Rolling Thunder Farms LLC | Agriculture | Van Buren |
| Presque Isle International Airport - PQI | Airport | Presque Isle |
| Download Aroostook County business listings | ||
Aroostook County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Aroostook County Basemaps
Aroostook 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 Aroostook County Data Package
This page shows a preview of what's included in the Aroostook 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 parcels, 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 Aroostook County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.