Chaptico, MD · standard
ZIP Code 20621
St. Mary's County, Maryland - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 1,373
- 38/sq mi
- $481,100
- Median home value
- 15.8%
- Bachelor's or higher
The verdict
Chaptico pairs upper-quartile home values, in a rural, homeowner-dominated area.
- Top 14%
- home value, US ZIPs
- 38
- people per sq mi
- 100%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 20621 against every reporting US ZIP.
ZIP code 20621 is a sparsely populated ZIP (a standard USPS delivery area) in Chaptico, St. Mary's County, Maryland, home to just 1,373 residents across 36.1 square miles, a density of 38 people per square mile, in the New York time zone.
Median household income is not on file for ZIP 20621, but per-capita income is $54,408. The poverty rate stands at 20.0% and the unemployment rate at 14.4%. The typical home here is valued at $481,100 (8% above the state average); renters pay a median of - monthly, and 100.0% of units are owner-occupied.
Educational attainment sits below the national norm: 15.8% of adults hold a bachelor's degree or higher, the median age is 63, and the average commute is -. Beyond these figures, 10 nearby ZIP codes within about 10 miles are surfaced below, along with 6 more sharing St. Mary's County, letting you compare 20621 to its immediate surroundings rather than a national baseline alone.
Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 20621, Chaptico, MD · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.
Quick Facts
1,373
Population
36.1
Area (sq mi)
38
People / sq mi
New York
Time Zone
standard
ZIP Type
Who lives in ZIP 20621?
63.0
Median Age
55.7%
Male
44.3%
Female
2.1%
Foreign-Born
Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How much do residents earn?
$54,408
Per Capita Income
20.0%
Poverty Rate
14.4%
Unemployment Rate
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What is the education profile here?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
611
Total Housing Units
534
Occupied Units
77
Vacant Units
1.79
Avg Household Size
Occupancy Type
$481,100
Median Home Value
+8% vs state
1975
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 14 business establishments in ZIP 20621, employing approximately 88 people with a combined annual payroll of $2,574,000.
14
Businesses
88
Employees
$2.6M
Annual Payroll
2
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Construction | 4 | 28.6% |
| Other services (except public administration) | 3 | 21.4% |
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
Nearby ZIP Codes
Want a side-by-side? Compare 20621 vs 20618 →
ZIP 20621 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 20659
Mechanicsville (20659)
23,498 residents
- 20664 2,987
Newburg (20664)
2,987 residents
- 20621 1,373
Chaptico (20621)
1,373 residents
- 20624 1,282
Clements (20624)
1,282 residents
- 20609 1,120
Avenue (20609)
1,120 residents
- 20625 1,062
Cobb Island (20625)
1,062 residents
- 20645 857
Issue (20645)
857 residents
- 20618 607
Bushwood (20618)
607 residents
- 20606 431
Abell (20606)
431 residents
What this shows Among its immediate neighbors, ZIP 20621 ranks #3 by population - useful context the national average alone can't give.
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 20618 | Bushwood, MD | 607 | 3.5 mi |
| 20624 | Clements, MD | 1,282 | 3.2 mi |
| 20609 | Avenue, MD | 1,120 | 4.5 mi |
| 20625 | Cobb Island, MD | 1,062 | 5.5 mi |
| 20660 | Morganza, MD | 97 | 5.6 mi |
| 20606 | Abell, MD | 431 | 5.9 mi |
| 20626 | Coltons Point, MD | 373 | 7.2 mi |
| 20645 | Issue, MD | 857 | 6.4 mi |
| 20664 | Newburg, MD | 2,987 | 6.9 mi |
| 20659 | Mechanicsville, MD | 23,498 | 7.1 mi |
More ZIP Codes in St. Mary's County
Related Areas
Frequently Asked Questions
What county is ZIP code 20621 in? ▼
What is the population of ZIP code 20621? ▼
What is the average home value in ZIP 20621? ▼
What is the demographic makeup of ZIP 20621? ▼
How many businesses are in ZIP code 20621? ▼
What is the education level in ZIP code 20621? ▼
What is the poverty rate in ZIP code 20621? ▼
Read our methodology to see how this data is sourced, computed, and verified.