Riva is a community in Anne Arundel County, Maryland, home to about 4,976 people across 2.5 square miles. Its ZIP code is 21140, and parts of 21035 and 21037 are in Riva too.
Homes sold for a median of $298 per square foot in the three months ending August 2026, a seller’s market.
All in Riva
Part is in Riva
Mostly Edgewater; part is in Riva
Each card is that ZIP code’s whole market, including any part outside Riva. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Riva’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Baltimore/Washington International Thurgood Marshall Airport (BWI)17 miles away |
|---|---|
| Nearest city of 250,000+ | Washington, DC23 miles away |
| Nearest city of 1 million+ | Philadelphia, PA107 miles away |
Straight-line distances from the center of Riva; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Riva had 4,257 residents in the 2020 census, up 7% since 2000.
It’s the 205th largest of 527 towns in Maryland by population.
Anne Arundel County grew from 39,620 residents in 1900 to 588,261 in 2020.
Anne Arundel County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 86°F in summer, and winter lows average 30°F. About 43.9 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Annapolis Naf, MD weather station (7 miles away).
245,664 jobs at 14,718 businesses in Anne Arundel County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
4 doctors and other health care providers list an office in Riva.
Nearest hospitals
Providers with an office here
| Mental health providers | 4 |
|---|
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (2 nearby)
Grocery stores
Pharmacies
Libraries
Museums
Theaters and performance venues
Counts are within about 1.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
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Shares ZIP codes with Mayo, Edgewater, Annapolis Neck and Parole.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.