Dewey Beach, DE GIS Map
Dewey Beach is a city in Sussex County, Delaware, with a population of about 341. The map below shows its location, boundary and surrounding roads, with federal GIS layers you can turn on for the area.
- County
- Sussex County
- Population
- 341
- Elevation
- -2 ft
- Coordinates
- 38.6893, -75.0774
- ZIP code
- 19971
- Land area
- 0.3 sq mi
- Time zone
- America/New York
About Dewey Beach, DE
Dewey Beach is an incorporated coastal town in eastern Sussex County, Delaware, United States. As of the 2020 census, Dewey Beach had a population of 353. It is part of the rapidly growing Cape Region and lies within the Salisbury, Maryland-Delaware Metropolitan Statistical Area. In 2011, the NRDC awarded Dewey Beach with a 5-Star rating in water quality. This award was given only to 12 other locations, one being neighboring Rehoboth Beach. Out of the 30 states with coastline, the Delaware Beaches ranked number 1 in water quality in 2011.
Source: Wikipedia (CC BY-SA 4.0)
Cities Near Dewey Beach
- Rehoboth Beach, DE2 mi
- Lewes, DE7 mi
- Bethany Beach, DE10 mi
- Georgetown, DE17 mi
- Cape May, NJ19 mi
- Milford, DE24 mi
- Ocean City, MD24 mi
- Wildwood, NJ25 mi
Other Cities in Sussex County
GIS Data for Dewey Beach, DE
The Dewey Beach 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 Dewey Beach 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.
Dewey Beach Demographics
Source: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates.
Population
351
Households
188
Median household income
$105,625
Median age
63.3 years
Median home value
$961,300
Median gross rent
$2,536/mo
Owner-occupied homes
87.8%
Bachelor's degree or higher
71.4%
Below poverty level
8.5%
Land area
0.3 sq mi
Population density
1,060 / sq mi
County
ZIP codes in Dewey Beach
Dewey Beach 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
341
April 2020 (estimates base)
356
July 2024 estimate
405
Change 2010-2020
+4.4%
Change 2020-2024
+13.8%
Photos of Dewey Beach
Hover over a photo to see it larger. Tap on mobile.
Photos from Wikimedia Commons, taken in or near Dewey Beach. Credits and licenses are shown in the larger view.
Soils of Dewey Beach
General soil map unit at the city center: Westbrook-Hooksan
Soil Properties
- Drainage class
- Very poorly drained
- Hydrologic soil group
- D (very slow infiltration, high runoff)
- Available water storage (0–150 cm)
- 24.1 cm
- Typical slope
- 3%
- Flooding frequency
- None
- Min. annual water table depth
- 0 cm
Soil Components
- Hooksan43%
Entisols · Typic Quartzipsamments
- Westbrook40%
Histosols · Terric Sulfihemists
- Ipswich7%
Histosols · Typic Sulfihemists
- Elkton4%
Ultisols · Typic Endoaquults
- Udorthents3%
Entisols
- Urban land3%
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 Dewey Beach
30-year averages (1991–2020) from the Lewes, De weather station, elevation 10 ft, 7.9 miles from the city center.
Warmest month
Jul · avg high 88°F
Coldest month
Jan · avg low 30°F
Annual precipitation
47.3 in
Annual snowfall
10.5 in
Average Monthly Temperatures (°F)
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 46 | 48 | 55 | 66 | 75 | 83 | 88 | 86 | 80 | 69 | 59 | 50 |
| Avg low °F | 30 | 32 | 38 | 46 | 56 | 66 | 71 | 69 | 64 | 52 | 42 | 35 |
| Precip. in | 3.38 | 3.17 | 4.21 | 3.45 | 3.38 | 3.77 | 4.95 | 4.31 | 4.49 | 4.41 | 3.59 | 4.17 |
| Snow in | 2.0 | 6.5 | 1.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.0 |
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 Dewey Beach
FEMA National Risk Index ratings for Sussex County, compared with all U.S. counties.
Overall risk
Score 94.1 of 100
Expected annual loss
Buildings, population & agriculture
Social vulnerability
Susceptibility to hazard impacts
Community resilience
Ability to prepare & recover
Risk by Hazard
- Cold WaveRelatively High
- Coastal FloodingVery High
- HurricaneRelatively High
- Winter WeatherVery High
- Inland FloodingRelatively Moderate
- Heat WaveRelatively Moderate
- DroughtRelatively Moderate
- Strong WindRelatively High
- WildfireRelatively Low
- LightningRelatively High
- Ice StormRelatively Moderate
- EarthquakeRelatively Low
- TornadoRelatively Low
- HailRelatively 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.
Dewey Beach FAQ
What county is Dewey Beach in?
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Dewey Beach, Delaware is located in Sussex County.
What is the population of Dewey Beach?
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Dewey Beach has a population of about 341, making it the number 21 of the 21 Delaware cities listed on GIS Map.
What is the elevation of Dewey Beach?
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The elevation of Dewey Beach is approximately -2 feet (-1 meters) above sea level at the city center.
What ZIP codes are in Dewey Beach?
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The ZIP code for Dewey Beach is 19971.
What time zone is Dewey Beach in?
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Dewey Beach is in the Eastern Time zone (America/New York).
How far is Dewey Beach from Dover?
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Dewey Beach is about 40 miles from Dover, the capital of Delaware, in a straight line.
How far is Dewey Beach from Wilmington?
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Dewey Beach is about 77 miles from Wilmington, the largest city in Delaware listed on GIS Map, in a straight line.
What cities are near Dewey Beach?
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Cities near Dewey Beach include Rehoboth Beach, DE (2 miles); Lewes, DE (7 miles); Bethany Beach, DE (10 miles); Georgetown, DE (17 miles); Cape May, NJ (19 miles).
Local notes for Dewey Beach, DE
Questions and local knowledge from people who know the area. Every note is read before it appears here.