Sagadahoc County GIS Maps
Sagadahoc County, Maine, has 36,699 residents across 20,804 parcels and covers 254 square miles. The population grew 4% between the 2010 and 2020 census. More residents moved in than left over that decade. The FIPS code for Sagadahoc County is 23023.
Bath is the county's largest population center. Sagadahoc County also includes 8 zip codes, 6 public school districts and 21 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.
Sagadahoc County Trends
- Population
- 36,699▴
- Median Home Value
- $300,200▴
- K-12 Enrollment
- 4,663▾
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.
Sagadahoc 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.
Sagadahoc County Parcels
Sagadahoc County has 20,804 mapped parcels. The median assessed value is $187,500. The median lot size is 1.36 acres. 2,262 parcels are 10 acres or larger. The records carry 13,008 distinct owner names. About 6% of parcels list an owner mailing address outside Maine. Owner names reach 79.3%. Mailing addresses reach 60.8%. Browse the interactive Sagadahoc County Parcel viewer here.
Sagadahoc County Parcel Data Coverage
| Field | Parcels | Coverage |
|---|---|---|
| Parcel ID | 20,804 | 100% |
| Owner name | 16,504 | 79.3% |
| Owner mailing address | 12,646 | 60.8% |
| Site address | 13,512 | 64.9% |
| Land use code | 9,308 | 44.7% |
| Land use description | 6,778 | 32.6% |
| Assessed value | 16,593 | 79.8% |
| Land value | 18,180 | 87.4% |
| Improvement value | 18,180 | 87.4% |
| Acreage | 15,576 | 74.9% |
| Parcel boundary | 20,804 | 100% |
| Download all Sagadahoc County parcels. | ||
Field coverage measured across all Sagadahoc County parcel records.
Sagadahoc County Population
Sagadahoc County had 36,699 residents in 2020. That was 4% higher than in 2010. Sagadahoc County added 1,485 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 145 people per square mile. Some of the county's most populated postal areas include Bath, Topsham and Richmond.
Population Trend in Sagadahoc County ME
Sagadahoc County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Sagadahoc County Zip Codes
Sagadahoc County has 8 zip codes. Some of the county's most populated zip codes include Bath (04530), Topsham (04086) and Richmond (04357). Bath is the largest zip by population, with about 11,153 residents or 30% of the county total. Together, the three largest zips account for about 66% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Sagadahoc County ME
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 04530 | Bath | 11,153 | ▴ 3.1% |
| 04086 | Topsham | 9,560 | ▴ 8.8% |
| 04357 | Richmond | 3,522 | ▴ 3.6% |
| 04287 | Bowdoinham | 3,136 | ▾ -2.7% |
| 04579 | Woolwich | 3,068 | ▾ -0.1% |
| Download all zip code data | |||
Sagadahoc County Zip Code populations and trends per most recent census data.
Sagadahoc County Demographics
Sagadahoc County has a median age of 47.3, which makes the county a little older than Maine overall. About 17.9% of residents are under 18, while 24% 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 29.6% of the population, which points to a solid working-age base. About 41.1% 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 Sagadahoc County ME
Median Age
47.3
Under 18
17.9%
Age 65+
24%
Bachelor's+
41.1%
Sagadahoc County School Districts
Sagadahoc County is served by 6 public school districts with 4,663 students enrolled in 2024. The largest districts on the county map are School Administrative District 75, Regional School Unit 01 and Richmond Public Schools. Those three districts account for about 97% 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 Sagadahoc County ME
| District | Enrollment | Share | Trend |
|---|---|---|---|
| School Administrative District 75 | 2,301 | 49.3% | ▾ -1.8% |
| Regional School Unit 01 | 1,788 | 38.3% | ▾ -1% |
| Richmond Public Schools | 422 | 9.1% | ▾ -1.6% |
| West Bath Public Schools | 101 | 2.2% | ▴ 4.1% |
| Georgetown | 51 | 1.1% | ▾ -1.9% |
| Download all school district data | |||
Sagadahoc County school district enrollment and trends per most recent NCES reporting data.
Sagadahoc County Housing & Real Estate
Sagadahoc County has a median home value of $300,200 and a median gross rent of $1,050. About 78% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run above the Maine median, while rents come in below the state average. In March 2026, the median listing price was $599,225 and homes spent about 60 days on the market.
Sagadahoc County Housing Mix
Sagadahoc County housing mix: owner, renter and vacant units.
Sagadahoc County Housing Trends
Sagadahoc County median home value and rent trend (last 5 years).
Businesses in Sagadahoc County, ME
Sagadahoc County has 1,706 business listings across 437 categories. The largest categories in Sagadahoc County business listings are Contractors (41, 2.4%), Community & Nonprofits (35, 2.1%), and Farm (34, 2.0%). The full Sagadahoc County business listings dataset includes names, categories, addresses and contact details where available. Sagadahoc County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Sagadahoc County, ME
| Category | Businesses | Share |
|---|---|---|
| Contractors | 41 | 2.4% |
| Community & Nonprofits | 35 | 2.1% |
| Farm | 34 | 2.0% |
| Churches & Religious Organizations | 32 | 1.9% |
| Gas Stations | 29 | 1.7% |
| Landmark And Historical Building | 29 | 1.7% |
| Auto Repair | 28 | 1.6% |
| Parks & Recreation | 22 | 1.3% |
| Structure And Geography | 21 | 1.2% |
| Convenience Stores | 20 | 1.2% |
Sagadahoc County Business Listings
| Business | Category | City |
|---|---|---|
| Backiel Manor | Accommodation | Georgetown |
| Abear Accounting Services, LLC | Accountant | Richmond |
| Mt. Ararat High School Football Field | Active Life | Topsham |
| Vibrant Health | Acupuncture | Bath |
| Betsy Lynne Photography | Advertising Agency | Woolwich |
| Natural Harvest Farms | Agricultural Cooperatives | Topsham |
| Wheelers Tractor Repair | Agricultural Service | Bowdoin |
| Topsham Tractor | Agriculture | Topsham |
| Merrymeeting Field | Airport | Bowdoinham |
| 99 Restaurants | American Restaurants | Topsham |
| Download Sagadahoc County business listings | ||
Sagadahoc County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Sagadahoc County Basemaps
Sagadahoc 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 Sagadahoc County Data Package
This page shows a preview of what's included in the Sagadahoc 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 Sagadahoc County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.