Patuxent River, MD · standard
ZIP Code 20670
St. Mary's County, Maryland - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 1,014
- 42/sq mi Moderate-density area
- $70,371
- Median income Near-median income area
- 29.8%
- Bachelor's or higher Near-average bachelor's attainment
National ZIP placement
Patuxent River pairs a below-median household income, in a rural, renter-heavy area.
- 47th pct
- household income, US ZIPs
- 42
- people per sq mi
- 0%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 20670 against every reporting US ZIP.
ZIP code 20670 is a sparsely populated ZIP (a standard USPS delivery area) in Patuxent River, St. Mary's County, Maryland, home to just 1,014 residents across 24.4 square miles, a density of 42 people per square mile, in the New York time zone.
ZIP 20670 lands in the middle-income range, with a median household income of $70,371 (38% below the average Maryland ZIP), while per-capita income is $25,143. The poverty rate is 0.0%, with unemployment at 4.8%; those measures add context to the income figure. The ACS does not report a median home value for this ZIP, so housing cost context is limited to the available tenure and rent fields.
Educational attainment sits below the national norm: 29.8% of adults hold a bachelor's degree or higher, the median age is 22.9, and the average commute is -. The page also surfaces 10 ZIP codes within roughly 10 miles and 6 more in St. Mary's County, so 20670 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 →
Top industries in ZIP 20670
Top 5 sectors by establishment count in Patuxent River, MD
Which industries have the most business establishments in ZIP 20670.
- Professional, scientific, and technical services
Professional, scientific, and technical services
54 establishments
- Transportation and warehousing 7
Transportation and warehousing
7 establishments
- Administrative and support and waste management and remediation services 6
Administrative and support and waste management and remediation services
6 establishments
- Accommodation and food services 4
Accommodation and food services
4 establishments
What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.
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 20670, Patuxent River, 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
1,014
Population
24.4
Area (sq mi)
42
People / sq mi
New York
Time Zone
standard
ZIP Type
Who lives in ZIP 20670?
22.9
Median Age
55.4%
Male
44.6%
Female
10.8%
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?
$70,371
Median Household Income
-38% vs state ZIP avg
$25,143
Per Capita Income
0.0%
Poverty Rate
4.8%
Unemployment Rate
How ZIP 20670 ranks among Maryland ZIPs
Patuxent River, 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)
$70,371 16th percentile higher than 16% 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
513housing units
513
Total Housing Units
439
Occupied Units
74
Vacant Units
3.52
Avg Household Size
Occupancy Type
$2,292
Median Rent
1994
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 76 business establishments in ZIP 20670, employing approximately 1,301 people with a combined annual payroll of $123,389,000.
76
Businesses
1,301
Employees
$123.4M
Annual Payroll
4
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Professional, scientific, and technical services | 54 | 71.0% |
| Transportation and warehousing | 7 | 9.2% |
| Administrative and support and waste management and remediation services | 6 | 7.9% |
| Accommodation and food services | 4 | 5.3% |
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 20670 vs 20653 →
ZIP 20670 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 20653
Lexington Park (20653)
24,481 residents
- 20657
Lusby (20657)
20,483 residents
- 20619
California (20619)
10,503 residents
- 20634 5,927
Great Mills (20634)
5,927 residents
- 20688 1,828
Solomons (20688)
1,828 residents
- 20620 1,443
Callaway (20620)
1,443 residents
- 20686 1,332
Saint Marys City (20686)
1,332 residents
- 20684 1,125
Saint Inigoes (20684)
1,125 residents
- 20670 1,014
Patuxent River (20670)
1,014 residents
What this shows Among its immediate neighbors, ZIP 20670 ranks #9 by population - useful context the national average alone can't give.
ZIP 20670 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 20684
Saint Inigoes (20684)
$180,060 median income
- 20620
Callaway (20620)
$165,972 median income
- 20634
Great Mills (20634)
$139,375 median income
- 20619
California (20619)
$119,432 median income
- 20657
Lusby (20657)
$115,748 median income
- 20653
Lexington Park (20653)
$103,048 median income
- 20688
Solomons (20688)
$102,950 median income
- 20629
Dowell (20629)
$87,389 median income
- 20670 $70,371
Patuxent River (20670)
$70,371 median income
What this shows By household income, ZIP 20670 ranks #9 of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 20653 | Lexington Park, MD | 24,481 | 3.7 mi |
| 20629 | Dowell, MD | 535 | 4.1 mi |
| 20667 | Park Hall, MD | 494 | 4.6 mi |
| 20688 | Solomons, MD | 1,828 | 4.5 mi |
| 20634 | Great Mills, MD | 5,927 | 4.8 mi |
| 20686 | Saint Marys City, MD | 1,332 | 7.1 mi |
| 20619 | California, MD | 10,503 | 5.8 mi |
| 20657 | Lusby, MD | 20,483 | 7.1 mi |
| 20684 | Saint Inigoes, MD | 1,125 | 9.7 mi |
| 20620 | Callaway, MD | 1,443 | 6.6 mi |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 20670, 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 (1,014 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 20670 in?
ZIP code 20670 (Patuxent River) 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 20670?
ZIP code 20670 in Patuxent River, MD has a population of 1,014 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 20670?
The median household income in ZIP 20670 is $70,371, which is 8% below the national average of $76,288.
What is the demographic makeup of ZIP 20670?
The largest racial group in ZIP 20670 is White at 56.2%. Hispanic or Latino residents make up 12.1% of the population.
How many businesses are in ZIP code 20670?
ZIP code 20670 has 76 business establishments employing approximately 1,301 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 20670?
The top industries by establishment count in ZIP 20670 are: Professional, scientific, and technical services (54), Transportation and warehousing (7), Administrative and support and waste management and remediation services (6). There are 4 industry sectors represented in total.
What is the education level in ZIP code 20670?
In ZIP code 20670, 58.1% of residents aged 25+ have a high school diploma or higher, and 29.8% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
Related
Take this with you
What to do with ZIP 20670's numbers, next.
- See how ZIP 20670 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Patuxent River, 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.