Frederick County GIS Maps

Frederick 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.

Frederick County Parcels

Frederick County has 103,433 mapped parcels covering 384,036 acres. The median assessed value is $443,900. The median lot size is 0.26 acres. 6,269 parcels are 10 acres or larger. Residential accounts for 64.5% of parcels. Town houses follow at 19.5% and agricultural at 4.8%. Of the parcels with a recorded build year, half were built in 1991 or earlier. The records carry 92,523 distinct owner names. About 4% of parcels list an owner mailing address outside Maryland. Owner names, mailing addresses, assessed values and lot sizes are on nearly every parcel. Site addresses reach 94.7%. Browse the interactive Frederick County Parcel viewer here.

Frederick County Parcel Data Coverage

Field coverage measured across all Frederick County parcel records. Download free sample data here.

Frederick County Population

Frederick County had 271,717 residents in 2020. That was 16.4% higher than in 2010. Frederick County added 76,440 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 411 people per square mile. Some of the county's most populated postal areas include Frederick, Frederick and Frederick.

Population Trend in Frederick County MD

Frederick County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.

Frederick County Zip Codes

Frederick County has 27 zip codes. Some of the county's most populated zip codes include Frederick (21702), Frederick (21703) and Frederick (21701). Frederick is the largest zip by population, with about 46,412 residents or 17% of the county total. Together, the three largest zips account for about 47% of all county residents based on 2020 population estimates.

Most Populated Zip Codes in Frederick County MD

Frederick County Zip Code populations and trends per most recent census data.

Frederick County Demographics

Frederick County has a median age of 38.9, which makes the county a little younger than Maryland overall. About 23.4% of residents are under 18, while 15% 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 33.1% of the population, which points to a solid working-age base. About 44.9% of adults have a bachelor's degree or higher, above the statewide figure of 42.7%. 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 Frederick County MD

Frederick County School Districts

Frederick County is served by 1 public school district with 48,054 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 grown modestly since 2017 across the districts shown on the county map.

Largest School Districts by Enrollment in Frederick County MD

Frederick County school district enrollment and trends per most recent NCES reporting data.

Frederick County Housing & Real Estate

Frederick County has a median home value of $437,700 and a median gross rent of $1,706. About 77% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run above the Maryland median, while rents come in above the state average. In March 2026, the median listing price was $544,500 and homes spent about 23 days on the market.

Businesses in Frederick County, MD

Frederick County has 10,798 business listings across 888 categories. The largest categories in Frederick County business listings are Churches & Religious Organizations (292, 2.7%), Real Estate Agents (239, 2.2%), and Contractors (215, 2.0%). The full Frederick County business listings dataset includes names, categories, addresses and contact details where available. Frederick County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.

Top Business Categories in Frederick County, MD

Frederick County Business Listings

Frederick County business listings sourced from Overture Maps. Includes locations with a high level of confidence.

Frederick County Basemaps

Frederick 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.

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 Maryland — explore the full structure before you buy.