Residential delivery area · Maryland
ZIP Code 20640: Indian Head, MD
ZIP code 20640 uses the postal name Indian Head, Maryland and lies entirely in Charles County (Census 2020 ZIP-county file). About 11,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $100,593 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Bryans Road (17%), Indian Head (3%) and Potomac Heights (3%); 78% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Indian Head · its only residential ZIP
- County
- Charles County
- Census places
- Bryans Road (17%) census-designated place; Indian Head (3%); Potomac Heights (3%) census-designated place
- Neighborhoods
- Mattawoman Woods, Potomac Wood GeoNames
- Metro area
- Washington-Arlington-Alexandria, DC-VA-MD-WV
- House district
- MD-5 119th Congress
- State
- Maryland
- Time zone
- Eastern
- Land area
- 41.7 sq mi · 256 people per sq mi
Where is ZIP code 20640?
20640 centers on 38.527°, -77.202° and covers 41.7 square miles of land plus 5.8 of water. It borders 4 ZIP codes: 20658, 20662, 20616, 20646.
The map draws ZIP code areas only. For the streets inside 20640, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0); neighborhoods from the GeoNames gazetteer (CC BY 4.0), placed in this ZIP code by PlainZIP.
How does 20640 compare with the rest of Charles County?
| Measure | 20640 | In Charles County | In MD |
|---|---|---|---|
| People (ACS 2020-2024) | 10,685 | 9th of 25 | 176th of 477 |
| Median household income | $101k | 13th of 13 | 170th of 293 |
| Median home value | $325k | 18th of 18 | 251st of 320 |
Its median household income is higher than in 81% of U.S. residential ZIP codes, and it is denser than 65% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 20640?
The 2020 Census counted 9,949 people in 20640; the ACS, which samples households over 2020-2024, estimates 10,685. Between the 2010 and 2020 censuses its population fell 4.7% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 10,685
- 2020 Census count
- 9,949−4.7% since 2010 (10,438)
- Households
- 4,163
- Median age
- 38.8
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 20640?
Of the 10,685 people the ACS estimates in 20640, 19.9% are under 18 and 13.8% are 65 or older. The largest group by race and Hispanic origin is Black (not Hispanic) (42.4%), then White (not Hispanic) (41.6%).
- Under 1819.9%
- 18 to 6466.3%
- 65 and older13.8%
- Black, not Hispanic42.4%
- White, not Hispanic41.6%
- Other or two or more7.3%
- Hispanic or Latino7.3%
- Asian, not Hispanic1.5%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 20640 earn?
Median household income is $100,593 (ACS 2020-2024), the 13th highest of the 13 ranked ZIP codes in Charles County. It is not measurably different from 2015-2019 ($93,023 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $100,593±$14,303
- Income per person
- $49,439
- Below the poverty line
- 8.3%
- Unemployed (of the labor force)
- 4.2%
- Adults 25+ with a bachelor's degree
- 24.2%
- Adjusted gross income per tax return, 2022
- $71,0095,000 returns; wages 77% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 20640?
FHFA's house price index for 20640, built from repeat sales and appraisals of the same homes, rose 95% from 2015 to 2025 and rose 45% from 2020 to 2025, and moved −8.9% in 2025.
- Median home value (owners' estimate)
- $324,600
- Median gross rent
- $1,529
- Homes owned by their occupants
- 78.7%
- Housing units
- 4,501
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 20640?
94 business establishments had a location in this ZIP code in 2023, 1 more than in 2018; the most are in other services (except public administration) (ZIP Code Business Patterns).
- Other services (except public administration)20
- Professional, scientific, and technical services16
- Accommodation and food services10
- Retail trade8
- Real estate and rental and leasing8
- Construction7
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 20640?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 20658 | Marbury | 866 | $104k | 3.8 mi |
| 20662 | Nanjemoy | 2,129 | $87k | 6.8 mi |
| 20616 | Bryans Road | 8,057 | $128k | 10.9 mi |
| 20646 | La Plata | 21,400 | $132k | 10.9 mi |
| 22026 | Dumfries, VA | 22,897 | $124k | 5.6 mi (near) |
| 22191 | Woodbridge, VA | 73,623 | $109k | 7.4 mi (near) |
| 20693 | Welcome | 1,496 | $126k | 7.7 mi (near) |
| 20677 | Port Tobacco | 2,088 | $166k | 9.2 mi (near) |
| 22025 | Dumfries, VA | 19,356 | $150k | 9.2 mi (near) |
| 22079 | Lorton, VA | 35,284 | $148k | 10.3 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.