Avenue, MD · standard
ZIP Code 20609
St. Mary's County, Maryland - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 1,120
- 43/sq mi Moderate-density area
- $118,102
- Median income Above-median income area
- $568,400
- Median home value Above-median home value
- 20.6%
- Bachelor's or higher Near-average bachelor's attainment
National ZIP placement
Avenue pairs a top-decile household income with top-decile home values, in a rural, homeowner-dominated area.
- Top 10%
- household income, US ZIPs
- Top 10%
- home value, US ZIPs
- 43
- people per sq mi
- 89%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 20609 against every reporting US ZIP.
ZIP code 20609 is a sparsely populated ZIP (a standard USPS delivery area) in Avenue, St. Mary's County, Maryland, home to just 1,120 residents across 25.8 square miles, a density of 43 people per square mile, in the New York time zone.
ZIP 20609 skews affluent, with a median household income of $118,102 (3% above the average Maryland ZIP), while per-capita income is $146,472. The poverty rate is 3.4%, with unemployment at 5.2%; those measures add context to the income figure. Housing is both higher-cost and owner-heavy: median home value is $568,400 (27% above the average Maryland ZIP), while 88.9% of occupied homes are owner-occupied.
Educational attainment sits below the national norm: 20.6% of adults hold a bachelor's degree or higher, the median age is 59.3, and the average commute is -. The page also surfaces 9 ZIP codes within roughly 10 miles and 6 more in St. Mary's County, so 20609 can be compared with both its immediate and county-level context.
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 20609, Avenue, 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
1,120
Population
25.8
Area (sq mi)
43
People / sq mi
New York
Time Zone
standard
ZIP Type
Who lives in ZIP 20609?
59.3
Median Age
56.4%
Male
43.6%
Female
0.0%
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?
$118,102
Median Household Income
+3% vs state ZIP avg
$146,472
Per Capita Income
3.4%
Poverty Rate
5.2%
Unemployment Rate
How ZIP 20609 ranks among Maryland ZIPs
Avenue, MD household income vs. every Maryland ZIP code
Median household income among 419 reporting Maryland ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$118,102 Top 41% higher than 59% of 419 Maryland ZIPs
Each bar is a $20K-wide band; taller bars hold more Maryland ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023
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?
Housing stock: occupied vs vacant
370housing units
370
Total Housing Units
341
Occupied Units
29
Vacant Units
2.09
Avg Household Size
Occupancy Type
$568,400
Median Home Value
+27% vs state ZIP avg
1986
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 10 business establishments in ZIP 20609, employing approximately 38 people with a combined annual payroll of $1,452,000.
10
Businesses
38
Employees
$1.5M
Annual Payroll
1
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Construction | 3 | 30.0% |
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 20609 vs 20606 →
ZIP 20609 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
- 20650
Leonardtown (20650)
13,717 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
- 20618 607
Bushwood (20618)
607 residents
- 20606 431
Abell (20606)
431 residents
- 20626 373
Coltons Point (20626)
373 residents
What this shows Among its immediate neighbors, ZIP 20609 ranks #5 by population - useful context the national average alone can't give.
ZIP 20609 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 20650
Leonardtown (20650)
$143,116 median income
- 20659
Mechanicsville (20659)
$121,654 median income
- 20609
Avenue (20609)
$118,102 median income
- 20618
Bushwood (20618)
$105,508 median income
- 20624
Clements (20624)
$104,545 median income
- 20606
Abell (20606)
$88,262 median income
What this shows By household income, ZIP 20609 ranks #3 of 6 neighboring ZIPs, local affluence varies block to block, not just metro to metro.
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 20606 | Abell, MD | 431 | 1.4 mi |
| 20618 | Bushwood, MD | 607 | 2.0 mi |
| 20626 | Coltons Point, MD | 373 | 3.0 mi |
| 20624 | Clements, MD | 1,282 | 4.4 mi |
| 20621 | Chaptico, MD | 1,373 | 4.5 mi |
| 20625 | Cobb Island, MD | 1,062 | 5.1 mi |
| 20650 | Leonardtown, MD | 13,717 | 6.5 mi |
| 20660 | Morganza, MD | 97 | 7.1 mi |
| 20659 | Mechanicsville, MD | 23,498 | 10.2 mi |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 20609, both outside MD so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (1,120 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in St. Mary's County
Related Areas
Frequently Asked Questions
What county is ZIP code 20609 in?
ZIP code 20609 (Avenue) is located in St. Mary's County, Maryland. St. Mary's County contains multiple ZIP codes, see the full list at /counties/st-marys-md.
What is the population of ZIP code 20609?
ZIP code 20609 in Avenue, MD has a population of 1,120 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 20609?
The median household income in ZIP 20609 is $118,102, which is 55% above the national average of $76,288.
What is the average home value in ZIP 20609?
The median home value in ZIP 20609 is $568,400, which is 104% above the national average of $278,155.
What is the demographic makeup of ZIP 20609?
The largest racial group in ZIP 20609 is White at 95.8%.
How many businesses are in ZIP code 20609?
ZIP code 20609 has 10 business establishments employing approximately 38 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What is the education level in ZIP code 20609?
In ZIP code 20609, 45.8% of residents aged 25+ have a high school diploma or higher, and 20.6% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 20609?
In ZIP code 20609, approximately 88.9% of occupied housing units are owner-occupied and 11.1% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 20609?
The poverty rate in ZIP code 20609 is 3.4% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.
Related
Take this with you
What to do with ZIP 20609's numbers, next.
- See how ZIP 20609 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Avenue, MD ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.