Residential delivery area · Maryland
ZIP Code 21620: Chestertown, MD
ZIP code 21620 uses the postal name Chestertown, Maryland and lies mostly in Kent County (74% of its land) with the rest in Queen Anne's County (Census 2020 ZIP-county file). About 14,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $80,530 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Fairlee (3%), Chestertown (3%), Kingstown (2%), Georgetown (1%), Chesapeake Landing (under 1%) and Tolchester (under 1%); 90% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Chestertown · its only residential ZIP
- County
- Kent County (74%); Queen Anne's County (26%)
- Census places
- Fairlee (3%) census-designated place; Chestertown (3%); Kingstown (2%) census-designated place; Georgetown (1%) census-designated place
- Neighborhoods
- Heron Point, Mile Tree Village, Morganec Village GeoNames
- House district
- MD-1 119th Congress
- State
- Maryland
- Time zone
- Eastern
- Land area
- 118.7 sq mi · 116 people per sq mi
- PO Box ZIPs
- 21690 also use the name Chestertown
Where is ZIP code 21620?
21620 centers on 39.208°, -76.083° and covers 118.7 square miles of land plus 16.8 of water. It borders 8 ZIP codes: 21678, 21623, 21628, 21645, 21661, 21617, 21651, 21668.
The map draws ZIP code areas only. For the streets inside 21620, 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 21620 compare with the rest of Kent County?
| Measure | 21620 | In Kent County | In MD |
|---|---|---|---|
| People (ACS 2020-2024) | 13,810 | 1st of 9 | 159th of 477 |
| Median household income | $81k | 3rd of 5 | 234th of 293 |
| Median home value | $348k | 2nd of 5 | 231st of 320 |
Its median household income is higher than in 63% of U.S. residential ZIP codes, and it is denser than 56% 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 21620?
The 2020 Census counted 12,726 people in 21620; the ACS, which samples households over 2020-2024, estimates 13,810. Between the 2010 and 2020 censuses its population fell 1.0% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 13,810
- 2020 Census count
- 12,726−1.0% since 2010 (12,853)
- Households
- 5,700
- Median age
- 42.5
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 21620?
Of the 13,810 people the ACS estimates in 21620, 17.5% are under 18 and 25.4% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (76.6%), then Black (not Hispanic) (14.0%).
- Under 1817.5%
- 18 to 6457.2%
- 65 and older25.4%
- White, not Hispanic76.6%
- Black, not Hispanic14.0%
- Hispanic or Latino5.0%
- Other or two or more3.0%
- Asian, not Hispanic1.4%
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 21620 earn?
Median household income is $80,530 (ACS 2020-2024), the 3rd highest of the 5 ranked ZIP codes in Kent County. It is not measurably different from 2015-2019 ($78,289 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $80,530
- Income per person
- $46,314
- Below the poverty line
- 9.9%
- Unemployed (of the labor force)
- 3.7%
- Adults 25+ with a bachelor's degree
- 45.8%
- Adjusted gross income per tax return, 2022
- $89,4376,130 returns; wages 51% 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 21620?
FHFA's house price index for 21620, built from repeat sales and appraisals of the same homes, rose 95% from 2015 to 2025 and rose 63% from 2020 to 2025, and moved +9.1% in 2025.
- Median home value (owners' estimate)
- $347,500
- Median gross rent
- $1,249
- Homes owned by their occupants
- 72.0%
- Housing units
- 6,373
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 21620?
420 business establishments had a location in this ZIP code in 2023, 15 fewer than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance68
- Other services (except public administration)56
- Retail trade50
- Construction45
- Accommodation and food services41
- Professional, scientific, and technical services38
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 21620?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 21678 | Worton | 1,658 | $71k | 7.5 mi |
| 21623 | Church Hill | 2,669 | $78k | 8.5 mi |
| 21628 | Crumpton | 248 | $115k | 8.8 mi |
| 21645 | Kennedyville | 959 | $86k | 10.1 mi |
| 21661 | Rock Hall | 2,613 | $91k | 10.7 mi |
| 21617 | Centreville | 10,428 | $117k | 11.2 mi |
| 21651 | Millington | 2,290 | $74k | 12.5 mi |
| 21668 | Sudlersville | 2,011 | $79k | 12.5 mi |
| 21667 | Still Pond | 291 | $64k | 9.5 mi (near) |
| 21610 | Betterton | 391 | $86k | 11.0 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.
Which other ZIP codes use the name Chestertown?
1 more ZIP code carries the postal name Chestertown, MD without a residential delivery area: PO boxes at the post office, or a single organization with its own ZIP code. The Census Bureau publishes no figures for it.
| ZIP | County |
|---|---|
| 21690 | Kent County |
Source: GeoNames postal codes (CC BY 4.0), downloaded 2026-10-09; a ZIP code with no Census ZCTA has no residential delivery area.