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Maryland ZIP Codes
Calvert County
Solomons, MD
20688
20688 ZIP Code — Solomons, MD
Calvert County, Maryland
ZIP code 20688 is located in
Solomons ,
Maryland ,
within Calvert County .
It covers approximately 1.15 square miles and serves a population of
1,170 residents.
This is a standard ZIP code in the Eastern (ET) timezone,
served by area code 410/443/667 .
About ZIP code 20688
The housing stock consists of a significant share of large multi-unit buildings. Most homes were built in the 1990s, giving the area an established character. Median home value is $436,800. Owner-occupancy sits near the national average at 53%.
Median household income is $89,295. 72% of households receive Social Security income, suggesting a notable retiree or disability population.
The dominant occupation class is management, business, and professional, with professional and management as the leading industry. The average commute of 35 minutes is near the national average. Remote work is prevalent — 38% of workers work from home.
Educational attainment is high — 52% of residents hold a bachelor's degree or higher, well above the national average of 33%.
Notable community characteristics include a notable veteran presence at 21% of civilians, above the national average of 7%; and disability rates above the national average at 23%.
Overall, ZIP code 20688 reflects a community defined by a highly educated population, a strong veteran community, a high rate of remote workers, and a significant Social Security-dependent population.
20688 ZIP code map
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Cities in ZIP code 20688
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Nearby ZIP codes
Demographics
updated 05/2026
Population
Total population
1,170
Population density
1,017 / sq mi
State FIPS
24
County FIPS
009
Geography
Land area
1.15 sq mi
Water area
2.26 sq mi
Latitude
38.3296
Longitude
-76.4679
Timezone
Eastern (ET)
Area code
410/443/667
Economics
updated 05/2026
Household income
Income range
This ZIP
County avg
State avg
Under $50k
21.1%
17.9%
28.2%
$50k – $100k
22.1%
25.0%
28.2%
$100k – $200k
46.8%
39.4%
30.1%
Over $200k
10.0%
17.7%
13.4%
Demographics & statistics
$89,295
Median household income
$436,800
Median home value
$2,868
Median monthly rent
51.5%
Bachelor's or higher
Age distribution
Age summary
Group Count % Under 18 0 0.0% 18 and over 1,170 100.0% 65 and over 703 60.1% Median age 71.9 years
Race & ethnicity
Black or African American
0.3%
Group Count % White 1,165 99.6% Black or African American 4 0.3% Two or more races 1 0.1%
Household income
Income range
This ZIP
County avg
State avg
Under $50k
21.1%
17.9%
28.2%
$50k – $100k
22.1%
25.0%
28.2%
$100k – $200k
46.8%
39.4%
30.1%
Over $200k
10.0%
17.7%
13.4%
Range % of households $15k–$25k 5.4% $25k–$35k 9.2% $35k–$50k 10.6% $50k–$75k 17.5% $75k–$100k 9.0% $100k–$150k 24.1% $150k–$200k 11.2% $200k+ 13.0% Median income $89,295
Housing
Housing overview
Metric Value Median home value $436,800 Median rent / month $2,868 Owner occupied 52.8% Renter occupied 47.2% Vacant 12.7% Single-family detached 19.1% Large apartment buildings 44.4% Mobile homes 0.0% Median rooms 5.1 Avg household size (owned) 2.13
Year built
Era % 2020 or later 0.0% 2010–2019 4.6% 2000–2009 28.5% 1990–1999 41.0% 1980–1989 2.4% 1970–1979 7.1% 1960–1969 0.0% 1950–1959 16.5% 1940–1949 0.0% 1939 or earlier 0.0%
Bedrooms
Size % of units No bedroom (studio) 2.8% 1 bedroom 13.7% 2 bedrooms 50.3% 3 bedrooms 11.4% 4 bedrooms 6.7% 5+ bedrooms 15.1%
Vehicles per household
Vehicles % of households No vehicle 18.3% 1 vehicle 39.0% 2 vehicles 22.4% 3 or more 20.4%
Heating fuel
Fuel type % Utility gas 45.1% Electricity 52.3% Propane / LP gas 2.6%
Households & families
Household type Count % Married-couple family 317 48.6% Cohabiting couple 40 6.1% Male householder, no spouse 120 18.4% Female householder, no spouse 175 26.8% Households with children under 18 0 0.0% Households with seniors (65+) 489 75.0% Average household size 1.72
Marital status
Status Male Female Never married 9.2% 25.1% Married 61.8% 46.0% Separated 0.0% 0.0% Widowed 26.0% 26.9% Divorced 3.1% 2.1%
Education
Some college, no degree
12.0%
Graduate / professional
31.3%
Metric % HS diploma or higher 98.5% Bachelor's or higher 51.5%
School enrollment (ages 3–17)
Type Count % Nursery / preschool 0 0.0% Kindergarten 0 0.0% Elementary school 0 0.0% High school 0 0.0% College / grad school 133 100.0%
Employment
Industry of employment
Professional & management
57.4%
Education & healthcare
10.5%
Arts, food & hospitality
10.1%
Public administration
4.6%
Occupation
Category % Management, business & arts 67.5% Service 0.4% Sales & office 4.6% Natural resources & construction 21.1% Production & transportation 6.3%
Employment type
Type % Private sector 47.3% Government 14.8% Self-employed 38.0% Unpaid family workers 0.0%
Commute
Method % Drive alone 57.4% Carpool 0.0% Public transit 0.0% Walk 0.4% Work from home 38.0% Other means 4.2% Avg commute (minutes) 34.6
Poverty
Married-couple families
0.0%
Female-led households
0.0%
Income support
Source % of households Social Security 72.4% Retirement income 61.2% Supplemental Security 6.4% Cash public assistance 0.0% Food stamps / SNAP 2.6%
Health indicators
Condition % Obesity 29.6% High blood pressure 44.9% High cholesterol 42.8% Diabetes 12.9% Heart disease 10.3% Stroke 4.7% Asthma 8.8% Arthritis 41.0% Kidney disease 4.4% Pulmonary disease 8.3% Cancer 13.7%
Behavior / access % Smoking 10.1% Binge drinking 9.5% No physical activity 23.7% Less than 7 hrs sleep 30.0% Depression 15.5% Fair or poor health 13.5% Poor mental health 10.4% Poor physical health 9.6% No health insurance 8.5% Visited doctor (checkup) 82.8% Visited dentist 72.6% Cholesterol screening 95.6% Teeth loss 10.2%
Veterans & disability
Veterans Count % Civilian veterans 240 20.5%
Disability % Any disability 22.8% Under 18 0.0% 18–64 years 0.2% 65 and over 38.6%
Health insurance coverage
Type % Private insurance 86.1% Public insurance 58.9% No insurance 0.0% Uninsured under 19 0.0%
Language & origin
Language spoken at home (age 5+)
Language Count % English only 1,170 100.0% Spanish 0 0.0% Other Indo-European 0 0.0% Asian & Pacific Islander 0 0.0% Other languages 0 0.0%
Place of birth & citizenship
Origin Count % Native born (US) 1,134 96.9% Born in same state 1,134 96.9% Born in different state 484 41.4% Foreign born 0 0.0% Naturalized citizen 36 3.1% Not a US citizen 36 100.0%
Ancestry
Ancestry Count % French 509 43.5% Italian 465 39.7% Arab 61 5.2%
Ancestry Count % English 17 1.5% Dutch 13 1.1%
Technology access
Metric % of households Computer access 55.7% Internet access 91.9%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 20688
What city is ZIP code 20688 in?
ZIP code 20688 is primarily assigned to Solomons, Maryland.
What county is ZIP code 20688 in?
ZIP code 20688 falls within Calvert County, Maryland.
Does ZIP code 20688 have an older population?
60% of residents in ZIP code 20688 are 65 or older, above the national average of ~17%.
Does ZIP code 20688 have a large retiree population?
72% of households in ZIP code 20688 receive Social Security income, suggesting a significant retiree or disability population.
Does ZIP code 20688 have a large veteran population?
21% of civilians in ZIP code 20688 are veterans, above the national average of ~7%.
How educated is the population of ZIP code 20688?
52% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.
What timezone is ZIP code 20688 in?
ZIP code 20688 observes the EST timezone.
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