PlainZIP

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
$70,371
Median income
29.8%
Bachelor's or higher

The verdict

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 Maryland average), while per-capita income is $25,143. Poverty here runs at 0.0%, with unemployment measured at 4.8%. Housing costs here run - for a typical home value, with rent averaging $2,292 a month; 0.0% of homes are owner-occupied.

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 -. To put 20670 in local context, 10 ZIP codes within roughly 10 miles appear further down this page alongside 6 additional ZIPs in St. Mary's County, for a geography-aware comparison.

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.

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 · ZIP Code Business Patterns (ZBP) As of 2023

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

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 20670?

22.9

Median Age

55.4%

Male

44.6%

Female

10.8%

Foreign-Born

White 56.2%
African American 22.8%
Asian 2.3%
American Indian or Alaska Native 4.3%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 13.0%
Hispanic or Latino 12.1%

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

$25,143

Per Capita Income

0.0%

Poverty Rate

4.8%

Unemployment Rate

How ZIP 20670 ranks nationally

Patuxent River, MD household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$70,371 47th percentile higher than 47% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). This entry sits in this band. $80,000–$100,000: 5,778 US ZIPs (19%). Above this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US 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?

High School Graduate or Higher 58.1%
Bachelor's Degree or Higher 29.8%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

513

Total Housing Units

439

Occupied Units

74

Vacant Units

3.52

Avg Household Size

Occupancy Type

Owner 0.0%
Renter 100.0%

$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.

residents

What this shows Among its immediate neighbors, ZIP 20670 ranks #9 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 20670 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

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.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
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

More ZIP Codes in St. Mary's County

20653 standard
Lexington Park, MD
Pop: 24,481
20659 standard
Mechanicsville, MD
Pop: 23,498
20650 standard
Leonardtown, MD
Pop: 13,717
20619 standard
California, MD
Pop: 10,503
20636 standard
Hollywood, MD
Pop: 9,937
20634 standard
Great Mills, MD
Pop: 5,927

Related Areas

St. Mary's County Patuxent River, MD Maryland

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).

Read our methodology to see how this data is sourced, computed, and verified.