20690 ZIP Code — Tall Timbers, MD

Saint Marys County, Maryland

ZIP code 20690 is located in Tall Timbers, Maryland, within Saint Marys County. It covers approximately 1.67 square miles and serves a population of 843 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 301/240.

About ZIP code 20690

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 2000s, giving the area an established character. Median home value is $555,100. Owner-occupancy is high at 84%, well above the national average.

Median household income is $139,500. 32% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with public administration as the leading industry. The average commute of 32 minutes is near the national average.

Educational attainment is high — 56% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 20690 reflects a community defined by a highly educated population, high homeownership, and a significant Social Security-dependent population.

843

population

1.67

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

20690 ZIP code map

Cities in ZIP code 20690

Below are the cities the US Postal Service accepts for ZIP code 20690. Using any city not on this list may result in mail delivery delays.

City	Status
Tall Timbers	Preferred

Nearby ZIP codes

20692 Valley Lee (2.3 mi) 20630 Drayden (2.9 mi) 20674 Piney Point (4.8 mi) 20620 Callaway (5.1 mi) 20634 Great Mills (6.2 mi) 20667 Park Hall (6.2 mi) 20684 Saint Inigoes (6.6 mi) 20653 Lexington Park (7.8 mi) 22488 Kinsale (8.6 mi) 20680 Ridge (9 mi) 20619 California (9.1 mi) 20650 Leonardtown (9.2 mi)

Demographics updated 05/2026

Population
Total population	843
Population density	505 / sq mi
State FIPS	24
County FIPS	037

Geography
Land area	1.67 sq mi
Water area	0.61 sq mi
Latitude	38.1577
Longitude	-76.5280
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	18.2%	24.3%	28.2%
$50k – $100k	28.2%	27.4%	28.2%
$100k – $200k	18.7%	36.2%	30.1%
Over $200k	34.8%	12.1%	13.4%

Demographics & statistics

843

Population

505

People per sq mi

52.5

Median age

$139,500

Median household income

$63,745

Per capita income

$555,100

Median home value

$1,583

Median monthly rent

83.5%

Home ownership

0.0%

Poverty rate

18.2%

Unemployment

452

Housing units

56.0%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

45–54

55–59

60–64

65–74

75–84

← Male

Female →

Age summary

Group	Count	%
Under 18	168	19.9%
18 and over	675	80.1%
65 and over	188	22.3%
Median age	52.5 years

Race & ethnicity

White 86.2%

Two or more races 6.1%

Hispanic or Latino 4.3%

Asian 3.4%

Group	Count	%
White	759	86.2%
Two or more races	54	6.1%
Hispanic or Latino	38	4.3%
Asian	30	3.4%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	18.2%	24.3%	28.2%
$50k – $100k	28.2%	27.4%	28.2%
$100k – $200k	18.7%	36.2%	30.1%
Over $200k	34.8%	12.1%	13.4%

$15k–$25k 2.6%

$25k–$35k 3.5%

$35k–$50k 12.1%

$50k–$75k 3.5%

$75k–$100k 7.6%

$100k–$150k 26.2%

$150k–$200k 8.8%

$200k+ 35.6%

Range	% of households
$15k–$25k	2.6%
$25k–$35k	3.5%
$35k–$50k	12.1%
$50k–$75k	3.5%
$75k–$100k	7.6%
$100k–$150k	26.2%
$150k–$200k	8.8%
$200k+	35.6%
Median income	$139,500

Housing

Home values

$100k–$150k 12.3%

$200k–$300k 6.3%

$300k–$500k 26.1%

$500k–$1M 52.5%

$1M+ 2.8%

Housing overview

Metric	Value
Median home value	$555,100
Median rent / month	$1,583
Owner occupied	83.5%
Renter occupied	16.5%
Vacant	33.1%
Single-family detached	85.4%
Large apartment buildings	0.0%
Mobile homes	6.9%
Median rooms	5.2
Avg household size (owned)	2.48

Year built

Era	%
2020 or later	1.6%
2010–2019	5.7%
2000–2009	24.4%
1990–1999	13.0%
1980–1989	15.2%
1970–1979	0.0%
1960–1969	6.9%
1950–1959	0.0%
1940–1949	20.9%
1939 or earlier	12.4%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	1.6%
2 bedrooms	20.5%
3 bedrooms	50.8%
4 bedrooms	21.5%
5+ bedrooms	5.7%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	4.4%
2 vehicles	61.5%
3 or more	34.1%

Heating fuel

Fuel type	%
Electricity	72.1%
Propane / LP gas	19.4%
Wood	5.9%
No fuel used	2.6%

Households & families

Household type	Count	%
Married-couple family	270	79.4%
Cohabiting couple	0	0.0%
Male householder, no spouse	30	8.8%
Female householder, no spouse	40	11.8%
Households with children under 18	90	26.5%
Households with seniors (65+)	108	31.8%
Average household size	2.48

Marital status

Status	Male	Female
Never married	18.8%	19.8%
Married	75.3%	74.8%
Separated	0.0%	2.2%
Widowed	0.0%	0.0%
Divorced	6.0%	3.3%

Education

Less than 9th grade 13.1%

Some HS, no diploma 0.0%

HS graduate 9.6%

Some college, no degree 12.6%

Associate's degree 8.8%

Bachelor's degree 32.3%

Graduate / professional 23.7%

Metric	%
HS diploma or higher	86.9%
Bachelor's or higher	56.0%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	0	0.0%
Elementary school	56	39.7%
High school	62	44.0%
College / grad school	23	16.3%

Employment

Industry of employment

Public administration 38.4%

Professional & management 25.6%

Retail trade 12.5%

Education & healthcare 11.0%

Construction 5.9%

Arts, food & hospitality 3.6%

Wholesale trade 3.1%

Occupation

Category	%
Management, business & arts	72.9%
Service	3.3%
Sales & office	10.7%
Natural resources & construction	0.0%
Production & transportation	13.0%

Employment type

Type	%
Private sector	45.3%
Government	48.1%
Self-employed	6.6%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	82.0%
Carpool	3.4%
Public transit	0.0%
Walk	0.0%
Work from home	14.6%
Other means	0.0%
Avg commute (minutes)	31.7

Poverty

All people 0.0%

Under 18 years 0.0%

18 and over 0.0%

Married-couple families 0.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	31.8%
Retirement income	41.5%
Supplemental Security	0.0%
Cash public assistance	0.0%
Food stamps / SNAP	3.5%

Health indicators

Condition	%
Obesity	35.6%
High blood pressure	36.8%
High cholesterol	38.2%
Diabetes	10.7%
Heart disease	6.6%
Stroke	2.8%
Asthma	9.5%
Arthritis	28.2%
Kidney disease	2.8%
Pulmonary disease	6.3%
Cancer	7.5%

Behavior / access	%
Smoking	15.0%
Binge drinking	14.6%
No physical activity	20.7%
Less than 7 hrs sleep	33.6%
Depression	16.7%
Fair or poor health	11.4%
Poor mental health	12.7%
Poor physical health	8.6%
No health insurance	8.4%
Visited doctor (checkup)	77.7%
Visited dentist	71.1%
Cholesterol screening	93.2%
Teeth loss	9.5%

Veterans & disability

Veterans	Count	%
Civilian veterans	56	8.5%

Disability	%
Any disability	6.2%
Under 18	3.0%
18–64 years	5.6%
65 and over	10.6%

Health insurance coverage

Type	%
Private insurance	91.5%
Public insurance	26.0%
No insurance	1.7%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	793	94.1%
Spanish	16	2.0%
Other Indo-European	16	2.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	798	94.7%
Born in same state	741	87.9%
Born in different state	246	29.2%
Foreign born	57	6.8%
Naturalized citizen	45	5.3%
Not a US citizen	45	100.0%

Ancestry

Ancestry	Count	%
French	125	14.8%
Italian	60	7.1%

Ancestry	Count	%
German	15	1.8%
Arab	12	1.4%

Technology access

Metric	% of households
Computer access	40.3%
Internet access	89.7%

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

Frequently asked questions about ZIP code 20690

What city is ZIP code 20690 in?

ZIP code 20690 is primarily assigned to Tall Timbers, Maryland.

What county is ZIP code 20690 in?

ZIP code 20690 falls within Saint Marys County, Maryland.

How educated is the population of ZIP code 20690?

56% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Is ZIP code 20690 mostly owner-occupied?

84% of occupied units in ZIP code 20690 are owner-occupied, well above the national average.

What is the median household income in ZIP code 20690?

The median household income in ZIP code 20690 is $139,500, above the national median of ~$75,000.

What is the typical home value in ZIP code 20690?

The median home value in ZIP code 20690 is $555,100.

What timezone is ZIP code 20690 in?

ZIP code 20690 observes the EST timezone.