GIS Map

Ellis County, Texas GIS Map

This GIS map of Ellis County, Texas (TX) shows the official Census county boundary (FIPS 48139), with federal layers you can switch on for FEMA flood zones, USGS elevation contours and hillshade, NLCD land cover, and school district lines.

Ellis County has a population of about 213,160 (U.S. Census Bureau, 2020-2024 ACS 5-year estimate) and a land area of 935.8 square miles. Use the inspect tool to read coordinates, elevation and the layers under any point.

State
Texas (TX)
Population
213,160
Land area
935.8 sq mi
Density
228 / sq mi
Coordinates
32.3469, -96.7969
FIPS code
48139

Ellis County is not the only one — there are 2 other states with a county of the same name. Compare every Ellis County.

Ellis County Demographics

Source: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates.

Population

213,160

Households

71,759

Median household income

$99,595

Median age

36.3 years

Median home value

$348,600

Median gross rent

$1,594/mo

Owner-occupied homes

75.8%

Bachelor's degree or higher

30.1%

Below poverty level

6.9%

Land area

935.8 sq mi

Population density

228 / sq mi

Texas rankings

Richest citiesMost expensive homesMost affordable homesHighest rentMost educatedHighest poverty rateMost densely populatedLargest by population

Ellis County Population Growth

Source: U.S. Census Bureau, 2010 Census and Population Estimates Program (Vintage 2024: April 2020 estimates base and July 1, 2024 estimate).

2010 Census

149,610

April 2020 (estimates base)

192,451

July 2024 estimate

232,387

Change 2010-2020

+28.6%

Change 2020-2024

+20.8%

Natural Hazard Risk in Ellis County

FEMA National Risk Index ratings for Ellis County, compared with all U.S. counties.

Overall risk

Relatively Moderate

Score 81.6 of 100

Expected annual loss

$46,926,908

Buildings, population & agriculture

Social vulnerability

Relatively Low

Susceptibility to hazard impacts

Community resilience

Relatively High

Ability to prepare & recover

Risk by Hazard

  • HailRelatively High
  • Heat WaveRelatively Moderate
  • Cold WaveRelatively Moderate
  • TornadoRelatively Moderate
  • LightningRelatively High
  • WildfireRelatively Low
  • Inland FloodingRelatively Moderate
  • Winter WeatherRelatively Moderate
  • Ice StormRelatively Low
  • HurricaneVery Low
  • EarthquakeVery Low
  • Strong WindRelatively Low
  • DroughtRelatively Low
  • LandslideVery Low

Source: FEMA National Risk Index (December 2025 release). County-level ratings are relative to other U.S. counties and are not a property-specific assessment.

Environmental Conditions in Ellis County, Texas

Radon potential, monitored air quality and current drought status for Ellis County, Texas, from the Environmental Protection Agency and the U.S. Drought Monitor.

Radon potential

Zone 3

low radon potential

EPA predicts an average indoor level below 2 pCi/L, so the EPA still recommends testing, because elevated radon can occur anywhere.

Air quality (2024)

Median AQI 36Good

1 day at unhealthy for sensitive groups or worse.

90th percentile 51, peak 101 across 362 monitored days.

Drought status

Severe drought in 69.1% of the county

Drought Severity and Coverage Index 269.1 of 500.

  • D1 Moderate drought30.900000000000006%
  • D2 Severe drought69.1%

Map of 13 October 2026.

Sources: EPA Map of Radon Zones (September 2025), EPA Air Quality Index (2024) and the U.S. Drought Monitor. A radon zone is a regional planning tool, not a prediction for any individual home — the EPA recommends testing every home regardless of zone. Air quality is shown only for counties that host an EPA monitor. Drought figures describe one weekly map, not a long-term climate average. Compare counties in Texas.

GIS Data for Ellis County, TX

The Ellis County GIS map on this page loads live federal layers in your browser, so you can check flood zones, terrain, land cover and district boundaries anywhere in Ellis County without a separate GIS login. All of the Ellis GIS data below is drawn from public U.S. government sources.

Layers you can turn on

  • FEMA flood zones

    National Flood Hazard Layer — flood insurance rate map zones and floodways.

  • Elevation contours and hillshade

    USGS 3DEP terrain, so you can read slope and relief across the county.

  • Land cover

    NLCD land cover classes — forest, developed, wetland and water.

  • School districts

    Census TIGER unified and elementary school district boundaries.

  • ZIP code and county boundaries

    Census TIGER ZCTA and county boundary lines.

Map tools

  • Measure distance and area

    Draw a line or polygon to get length in miles or area in acres.

  • Sketch and annotate

    Add points, lines and shapes on top of the map.

  • Inspect any point

    Click the map to read coordinates, elevation and the layers under your cursor.

  • Download the map

    Save the current view as a PNG image.

Where the data comes from

County boundaries come from the U.S. Census Bureau TIGER/Line program, flood zones from FEMA's National Flood Hazard Layer, terrain from the USGS 3D Elevation Program, land cover from the Multi-Resolution Land Characteristics Consortium, and demographics from the American Community Survey.

Property records and tax maps in Ellis County

Most people who look up Ellis County GIS data are after parcel-level records: who owns a property, what it last sold for, and what it is assessed at. Those records are kept locally, not federally, so they are not part of this map. Ellis County property and tax map data lives with the county's own records office, and what that office is called varies by state — Texas counties run an appraisal district (usually searched as a “CAD”), Kentucky uses a Property Valuation Administrator (PVA), and most other states use a county assessor, auditor or tax office. Start with that office for a deed, a tax map number or a parcel boundary; use the map above for flood zones, elevation and land cover on the same land.

Ellis County FAQ

What state is Ellis County in?

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Ellis County is a county in Texas (TX).

What is the population of Ellis County?

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Ellis County, Texas has a population of about 213,160, according to the U.S. Census Bureau American Community Survey.

How big is Ellis County?

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Ellis County covers about 935.8 square miles of land, with a population density of roughly 228 people per square mile.

What is the FIPS code for Ellis County?

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The FIPS county code for Ellis County, Texas is 48139. It is used to identify the county in federal datasets such as Census TIGER and FEMA flood maps.

What is the median household income in Ellis County?

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The median household income in Ellis County, Texas is about $99,595 per year.

What is the radon zone for Ellis County?

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Ellis County is in EPA radon Zone 3, meaning the EPA predicts an average indoor radon level below 2 pCi/L. In this zone the EPA still recommends testing, because elevated radon can occur anywhere. The EPA is clear that a radon zone is a regional planning tool and not a prediction for any individual home.

What is the air quality in Ellis County?

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Across 2024, the EPA monitor covering Ellis County recorded a median Air Quality Index of 36 (Good) and a 90th percentile of 51, with a peak of 101. 1 day reached unhealthy for sensitive groups or worse. Only counties that host an EPA monitor have these figures.

Is Ellis County in a drought?

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As of the 13 October 2026 U.S. Drought Monitor map, severe drought covers 69.1% of Ellis County, and the county's Drought Severity and Coverage Index is 269.1 out of 500.

What is Ellis GIS?

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Ellis GIS usually refers to the county's own parcel and zoning mapping system, which Ellis County publishes itself. This page is a separate, free viewer: it draws federal GIS layers — FEMA flood zones, USGS elevation, NLCD land cover and Census boundaries — over the Ellis County boundary, with no login required.

What GIS data is available for Ellis County?

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The Ellis County map loads federal GIS layers directly in your browser: FEMA National Flood Hazard Layer flood zones, USGS 3DEP elevation contours and hillshade, NLCD land cover, Census TIGER school district boundaries, and TIGER ZIP code and county boundary lines.

How do I check flood zones in Ellis County?

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Open the Ellis County map, turn on the FEMA flood zones layer, and zoom in. The National Flood Hazard Layer shows flood insurance rate map zones and floodways. Flood zones only draw once you are zoomed in far enough.

How do I find the coordinates or elevation of a spot in Ellis County?

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Use the inspect tool on the Ellis County map and click any point. It reads back the coordinates, elevation and the layers under your cursor. You can also measure distance and area by drawing a line or polygon.

Data sources for Ellis County, Texas

Every figure on this page comes from a published government dataset. Each source is listed with its release date so you can check the number or cite it directly.

  • American Community Survey 5-year estimates

    U.S. Census Bureau · 2020-2024 · population, income, housing, education and poverty figures

  • Gazetteer Files

    U.S. Census Bureau · 2024 · place coordinates, land area and the county/place/ZIP crosswalk

  • TIGER/Line Shapefiles

    U.S. Census Bureau · 2024 · county, ZIP Code Tabulation Area and school district boundaries

  • National Flood Hazard Layer

    Federal Emergency Management Agency · current effective Flood Insurance Rate Maps · flood zones, floodways and base flood elevations

  • National Risk Index

    Federal Emergency Management Agency · v1.20, December 2025 · county natural hazard risk, expected annual loss, social vulnerability and resilience

  • 3D Elevation Program (3DEP)

    U.S. Geological Survey · current · elevation contours, shaded relief and point elevations

  • National Land Cover Database

    Multi-Resolution Land Characteristics Consortium · NLCD 2021 · land cover classes such as developed, forest, crop and water

  • Map of Radon Zones

    U.S. Environmental Protection Agency · September 2025 · the county radon zone (1, 2 or 3) and its predicted indoor radon potential

  • Air Quality Index annual summary by county

    U.S. Environmental Protection Agency · 2024 · median, 90th percentile and peak AQI, and days at unhealthy levels, for counties with an EPA monitor

  • U.S. Drought Monitor

    National Drought Mitigation Center, USDA and NOAA · weekly, current map · the share of county area in each drought category and the Drought Severity and Coverage Index

  • ArcGIS basemaps

    Esri · current · streets, satellite, topographic and dark gray basemap tiles

Citing this page

GIS Map, “Ellis County, Texas GIS Map”, https://gismap.land/county/texas/ellis. Figures from the datasets listed above.

How GIS Map sources and labels its data

Local notes for Ellis County, TX

Questions and local knowledge from people who know the area. Every note is read before it appears here.