20670 ZIP Code — Patuxent River, MD

Saint Marys County, Maryland

ZIP code 20670 is located in Patuxent River, Maryland, within Saint Marys County. It covers approximately 9.35 square miles and serves a population of 1,403 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 301/240.

About ZIP code 20670

The housing stock consists of a mix of housing types. Much of the housing stock is relatively new, reflecting recent development activity.

The gap between median ($53,125) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 5% is below the national average.

The dominant occupation class is management, business, and professional, with professional and management as the leading industry. The average commute of 10 minutes is near the national average.

Educational attainment is near the national average, with 28% of residents holding a bachelor's degree or higher.

Notable community characteristics include a notable veteran presence at 25% of civilians, above the national average of 7%.

1,403

population

9.35

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

20670 ZIP code map

Cities in ZIP code 20670

Below are the cities the US Postal Service accepts for ZIP code 20670. Using any city not on this list may result in mail delivery delays.

City	Status
Patuxent River	Acceptable
Patuxent River	Preferred

Nearby ZIP codes

20653 Lexington Park (3.1 mi) 20688 Solomons (4 mi) 20688 Solomons (4 mi) 20667 Park Hall (5 mi) 20634 Great Mills (5.1 mi) 20619 California (6.1 mi) 20657 Lusby (6.5 mi) 20620 Callaway (6.8 mi) 20692 Valley Lee (8.4 mi) 20630 Drayden (9 mi) 20636 Hollywood (9.5 mi) 20684 Saint Inigoes (10.1 mi)

Demographics updated 05/2026

Population
Total population	1,403
Population density	150 / sq mi
State FIPS	24
County FIPS	037

Geography
Land area	9.35 sq mi
Water area	5.68 sq mi
Latitude	38.2859
Longitude	-76.4186
Timezone	Eastern (ET)
Area code	301/240

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	36.8%	24.3%	28.2%
$50k – $100k	45.7%	27.4%	28.2%
$100k – $200k	13.9%	36.2%	30.1%
Over $200k	3.6%	12.1%	13.4%

Demographics & statistics

1,403

Population

150

People per sq mi

20.1

Median age

$53,125

Median household income

$19,945

Per capita income

Median home value

$2,000

Median monthly rent

0.0%

Home ownership

5.2%

Poverty rate

0.0%

Unemployment

Housing units

28.0%

Bachelor's or higher

Age distribution

Male Female

156

Under 5

144

138

5–9

128

10–14

15–19

20–24

156

25–34

144

35–44

45–54

60–64

65–74

75–84

← Male

Female →

Age summary

Group	Count	%
Under 18	674	48.0%
18 and over	729	52.0%
65 and over	13	0.9%
Median age	20.1 years

Race & ethnicity

White 69.8%

Black or African American 9.4%

Hispanic or Latino 7.8%

Two or more races 7.6%

Other race 3.1%

American Indian / Alaska Native 1.6%

Asian 0.7%

Group	Count	%
White	1,062	69.8%
Black or African American	143	9.4%
Hispanic or Latino	118	7.8%
Two or more races	116	7.6%
Other race	47	3.1%
American Indian / Alaska Native	25	1.6%
Asian	10	0.7%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	36.8%	24.3%	28.2%
$50k – $100k	45.7%	27.4%	28.2%
$100k – $200k	13.9%	36.2%	30.1%
Over $200k	3.6%	12.1%	13.4%

Under $10k 3.2%

$15k–$25k 2.2%

$25k–$35k 8.5%

$35k–$50k 26.9%

$50k–$75k 23.1%

$75k–$100k 13.6%

$100k–$150k 13.0%

$150k–$200k 4.4%

$200k+ 5.1%

Range	% of households
Under $10k	3.2%
$15k–$25k	2.2%
$25k–$35k	8.5%
$35k–$50k	26.9%
$50k–$75k	23.1%
$75k–$100k	13.6%
$100k–$150k	13.0%
$150k–$200k	4.4%
$200k+	5.1%
Median income	$53,125

Housing

Home values

Housing overview

Metric	Value
Median home value	$0
Median rent / month	$2,000
Owner occupied	0.0%
Renter occupied	100.0%
Vacant	11.2%
Single-family detached	12.4%
Large apartment buildings	0.0%
Mobile homes	0.0%
Median rooms	6.4
Avg household size (owned)	0.00

Year built

Era	%
2020 or later	0.0%
2010–2019	27.5%
2000–2009	20.8%
1990–1999	2.2%
1980–1989	6.7%
1970–1979	9.6%
1960–1969	6.2%
1950–1959	17.4%
1940–1949	9.6%
1939 or earlier	0.0%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	0.0%
2 bedrooms	0.0%
3 bedrooms	45.5%
4 bedrooms	54.5%
5+ bedrooms	0.0%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	34.5%
2 vehicles	65.5%
3 or more	0.0%

Heating fuel

Fuel type	%
Utility gas	43.7%
Electricity	56.3%

Households & families

Household type	Count	%
Married-couple family	295	93.4%
Cohabiting couple	0	0.0%
Male householder, no spouse	5	1.6%
Female householder, no spouse	16	5.1%
Households with children under 18	264	83.5%
Households with seniors (65+)	9	2.8%
Average household size	4.04

Marital status

Status	Male	Female
Never married	26.0%	9.6%
Married	71.2%	86.8%
Separated	0.0%	0.0%
Widowed	0.0%	0.0%
Divorced	2.8%	3.7%

Education

Less than 9th grade 0.0%

Some HS, no diploma 0.0%

HS graduate 21.6%

Some college, no degree 31.4%

Associate's degree 19.0%

Bachelor's degree 12.6%

Graduate / professional 15.3%

Metric	%
HS diploma or higher	100.0%
Bachelor's or higher	28.0%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	69	12.5%
Kindergarten	79	14.3%
Elementary school	260	46.9%
High school	29	5.2%
College / grad school	117	21.1%

Employment

Industry of employment

Professional & management 22.4%

Education & healthcare 20.1%

Arts, food & hospitality 13.1%

Transportation & utilities 12.6%

Finance & real estate 9.8%

Retail trade 9.3%

Public administration 6.5%

Manufacturing 3.3%

Other services 2.8%

Occupation

Category	%
Management, business & arts	29.0%
Service	23.4%
Sales & office	28.0%
Natural resources & construction	13.6%
Production & transportation	6.1%

Employment type

Type	%
Private sector	78.5%
Government	15.9%
Self-employed	5.6%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	68.2%
Carpool	2.4%
Public transit	0.0%
Walk	24.6%
Work from home	4.2%
Other means	0.6%
Avg commute (minutes)	9.8

Poverty

All people 5.2%

Under 18 years 5.5%

18 and over 4.8%

Married-couple families 2.7%

Female-led households 100.0%

Income support

Source	% of households
Social Security	3.8%
Retirement income	12.3%
Supplemental Security	0.0%
Cash public assistance	0.0%
Food stamps / SNAP	12.3%

Health indicators

Condition	%
Obesity	37.5%
High blood pressure	21.1%
High cholesterol	18.9%
Diabetes	4.4%
Heart disease	2.0%
Stroke	1.1%
Asthma	10.3%
Arthritis	11.0%
Kidney disease	1.3%
Pulmonary disease	3.2%
Cancer	1.8%

Behavior / access	%
Smoking	19.1%
Binge drinking	20.9%
No physical activity	20.7%
Less than 7 hrs sleep	39.4%
Depression	18.6%
Fair or poor health	9.9%
Poor mental health	17.8%
Poor physical health	6.4%
No health insurance	13.1%
Visited doctor (checkup)	69.9%
Visited dentist	58.8%
Cholesterol screening	81.9%
Teeth loss	12.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	104	25.1%

Disability	%
Any disability	1.4%
Under 18	0.0%
18–64 years	3.8%
65 and over	0.0%

Health insurance coverage

Type	%
Private insurance	94.5%
Public insurance	15.7%
No insurance	0.0%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	1,103	78.6%
Spanish	13	1.2%
Other Indo-European	7	0.6%
Asian & Pacific Islander	0	0.0%
Other languages	6	0.5%

Place of birth & citizenship

Origin	Count	%
Native born (US)	1,326	94.5%
Born in same state	1,281	91.3%
Born in different state	316	22.5%
Foreign born	45	3.2%
Naturalized citizen	77	5.5%
Not a US citizen	40	51.9%

Ancestry

Ancestry	Count	%
Italian	191	13.6%
French	104	7.4%
English	83	5.9%

Ancestry	Count	%
Arab	18	1.3%
Dutch	12	0.9%
Polish	9	0.6%

Technology access

Metric	% of households
Computer access	22.5%
Internet access	100.0%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 20670

What city is ZIP code 20670 in?

ZIP code 20670 is primarily assigned to Patuxent River, Maryland.

What county is ZIP code 20670 in?

ZIP code 20670 falls within Saint Marys County, Maryland.

Is ZIP code 20670 family-oriented?

48% of residents in ZIP code 20670 are under 18, reflecting a younger, family-oriented community.

Does ZIP code 20670 have a large veteran population?

25% of civilians in ZIP code 20670 are veterans, above the national average of ~7%.

What is the population of ZIP code 20670?

ZIP code 20670 has an estimated population of 1,403 residents, with a density of 150 people per square mile.

What is the median household income in ZIP code 20670?

The median household income in ZIP code 20670 is $53,125, below the national median of ~$75,000.

What timezone is ZIP code 20670 in?

ZIP code 20670 observes the EST timezone.