Harris County GIS Maps

Harris 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.

Harris County Parcels

Harris County has 1,523,660 mapped parcels. The median assessed value is $266,257. The median lot size is 1.85 acres. 170,843 parcels are 10 acres or larger. Of the parcels with a recorded build year, half were built in 1984 or earlier. The records carry 1,122,492 distinct owner names. About 4% of parcels list an owner mailing address outside Texas. Owner names, mailing addresses, site addresses, assessed values and lot sizes are on nearly every parcel. Browse the interactive Harris County Parcel viewer here.

Harris County Parcel Data Coverage

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

Harris County Population

Harris County had 4,731,145 residents in 2020. That was 15.6% higher than in 2010. Harris County added 1,330,567 people between 2000 and 2020, which points to steady long-term growth. Houston is the largest city in the county, but it accounts for only about 49% of the total population. The county is fairly spread out, with about 2,775 people per square mile. Some of the county's most populated postal areas include Katy, Houston and Cypress.

Population Trend in Harris County TX

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

Harris County Zip Codes

Harris County has 132 zip codes. Some of the county's most populated zip codes include Katy (77449), Houston (77084) and Cypress (77433). Katy is the largest zip by population, with about 128,180 residents or 3% of the county total. Together, the three largest zips account for about 7% of all county residents based on 2020 population estimates.

Most Populated Zip Codes in Harris County TX

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

Harris County Demographics

Harris County has a median age of 34.4, which makes the county a little younger than Texas overall. About 26.1% of residents are under 18, while 11.4% 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 36.4% of the population, which points to a solid working-age base. About 33.7% of adults have a bachelor's degree or higher, above the statewide figure of 33.1%. The county has a more diverse population mix, with no single race or ethnicity accounting for all of the local story.

Key Demographics for Harris County TX

Harris County School Districts

Harris County is served by 22 public school districts with 887,977 students enrolled in 2024. The largest districts on the county map are Houston Independent, Cypress-Fairbanks Independent and Katy Independent. Those three districts account for about 44% 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 Harris County TX

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

Harris County Housing & Real Estate

Harris County has a median home value of $255,000 and a median gross rent of $1,349. About 55% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run below the Texas median, while rents come in above the state average. In March 2026, the median listing price was $329,900 and homes spent about 48 days on the market.

Businesses in Harris County, TX

Harris County has 196,287 business listings across 1,524 categories. The largest categories in Harris County business listings are Churches & Religious Organizations (3,665, 1.9%), Auto Repair (3,414, 1.7%), and Beauty Salons (3,146, 1.6%). The full Harris County business listings dataset includes names, categories, addresses and contact details where available. Harris County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.

Top Business Categories in Harris County, TX

Harris County Business Listings

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

Harris County Basemaps

Harris 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 Texas — explore the full structure before you buy.