Demopolis, AL GIS Map
Demopolis is a city in Marengo County, Alabama, with a population of about 6,830. The map below shows its location, boundary and surrounding roads, with federal GIS layers you can turn on for the area.
- County
- Marengo County
- Population
- 6,830
- Elevation
- 128 ft
- Coordinates
- 32.5174, -87.8364
- ZIP code
- 36732
- Land area
- 17.7 sq mi
- Time zone
- America/Chicago
About Demopolis, AL
Demopolis is the largest city in Marengo County, in west-central Alabama. The population was 7,162 at the 2020 census.
Source: Wikipedia (CC BY-SA 4.0)
Cities Near Demopolis
GIS Data for Demopolis, AL
The Demopolis map loads live federal GIS layers in your browser, so you can check flood zones, terrain, land cover and district boundaries for any address in Demopolis without a separate GIS login. Everything below is drawn from public U.S. government data.
Layers you can turn on
FEMA flood zones
National Flood Hazard Layer — flood insurance rate map zones.
Elevation contours and hillshade
USGS 3DEP terrain, so you can read slope and relief.
Land cover
NLCD land cover classes — forest, developed, wetland, 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.
Demopolis Demographics
Source: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates.
Population
6,908
Households
3,348
Median household income
$34,802
Median age
45.1 years
Median home value
$183,600
Median gross rent
$692/mo
Owner-occupied homes
54.9%
Bachelor's degree or higher
27.4%
Below poverty level
26%
Land area
17.7 sq mi
Population density
389 / sq mi
County
ZIP codes in Demopolis
Demopolis 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
7,483
April 2020 (estimates base)
7,168
July 2024 estimate
6,724
Change 2010-2020
-4.2%
Change 2020-2024
-6.2%
Soils of Demopolis
General soil map unit at the city center: Vaiden-Sumter-Oktibbeha
Soil Properties
- Drainage class
- Well drained
- Hydrologic soil group
- D (very slow infiltration, high runoff)
- Available water storage (0–150 cm)
- 16.6 cm
- Typical slope
- 4%
- Flooding frequency
- None
- Min. depth to bedrock
- 77 cm
Soil Components
- Sumter16%
Inceptisols · Rendollic Eutrudepts
- Oktibbeha10%
Vertisols · Chromic Dystruderts
- Sumter8%
Inceptisols · Rendollic Eutrudepts
- Watsonia7%
Vertisols · Leptic Hapluderts
- Leeper6%
Inceptisols · Vertic Epiaquepts
- Vaiden6%
Vertisols · Aquic Dystruderts
Source: USDA NRCS U.S. General Soil Map (STATSGO2). General soil map data (1:250,000 scale) is not suitable for site-specific decisions.
Climate of Demopolis
30-year averages (1991–2020) from the Demopolis L&D, Al weather station, elevation 100 ft, 2.5 miles from the city center.
Warmest month
Jul · avg high 92°F
Coldest month
Jan · avg low 34°F
Annual precipitation
56.2 in
Annual snowfall
0.2 in
Average Monthly Temperatures (°F)
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 57 | 61 | 69 | 77 | 84 | 90 | 92 | 91 | 87 | 78 | 67 | 59 |
| Avg low °F | 34 | 37 | 44 | 51 | 60 | 68 | 71 | 70 | 65 | 53 | 42 | 36 |
| Precip. in | 5.66 | 5.45 | 5.75 | 4.85 | 3.65 | 4.65 | 5.03 | 4.85 | 3.38 | 3.25 | 4.30 | 5.39 |
| Snow in | 0.0 | 0.0 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
Source: NOAA NCEI U.S. Climate Normals, 1991–2020. Conditions at the station may differ from other parts of the city.
Natural Hazard Risk in Demopolis
FEMA National Risk Index ratings for Marengo County, compared with all U.S. counties.
Overall risk
Score 52.2 of 100
Expected annual loss
Buildings, population & agriculture
Social vulnerability
Susceptibility to hazard impacts
Community resilience
Ability to prepare & recover
Risk by Hazard
- Strong WindRelatively Moderate
- TornadoRelatively Moderate
- HurricaneRelatively Low
- EarthquakeRelatively Low
- Heat WaveRelatively Low
- LightningRelatively Moderate
- DroughtRelatively Low
- Inland FloodingRelatively Low
- LandslideVery Low
- Cold WaveRelatively Low
- Ice StormRelatively Low
- WildfireVery Low
- HailVery Low
- Winter WeatherVery 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.
Demopolis FAQ
What county is Demopolis in?
+
Demopolis, Alabama is located in Marengo County.
What is the population of Demopolis?
+
Demopolis has a population of about 6,830, making it the number 56 of the 57 Alabama cities listed on GIS Map.
What is the elevation of Demopolis?
+
The elevation of Demopolis is approximately 128 feet (39 meters) above sea level at the city center.
What ZIP codes are in Demopolis?
+
The ZIP code for Demopolis is 36732.
What time zone is Demopolis in?
+
Demopolis is in the Central Time zone (America/Chicago).
How far is Demopolis from Montgomery?
+
Demopolis is about 90 miles from Montgomery, the capital of Alabama, in a straight line.
How far is Demopolis from Huntsville?
+
Demopolis is about 169 miles from Huntsville, the largest city in Alabama listed on GIS Map, in a straight line.
What cities are near Demopolis?
+
Cities near Demopolis include Selma, AL (48 miles); Tuscaloosa, AL (50 miles); Northport, AL (51 miles); Meridian, MS (52 miles); Clanton, AL (74 miles).
Local notes for Demopolis, AL
Questions and local knowledge from people who know the area. Every note is read before it appears here.