20634California, Maryland

Area Profile

Income, jobs, climate, physical risk and development data for ZIP code 20634.

Area Score unavailable

Missing required signal: growth. AreaProfile withholds a score rather than inferring the missing dimensions.

How we calculate this

How this area ranks
OpportunityTop 30% of 6,210 ZIP areas measured65
Schools3771st of 4,422 ZIP areas measured24
Housing affordabilityTop 9% of 6,685 ZIP areas measured100
ClimateTop 23% of 6,789 ZIP areas measured77
Physical resilienceTop 9% of 6,709 ZIP areas measured91
Access6270th of 6,791 ZIP areas measured63
Economic stabilityTop 12% of 6,742 ZIP areas measured79
The quick read

Unemployment is 3.5% and median household income $139,375, putting employment conditions in the middle range of published ZIP profiles.

Housing is more affordable relative to local incomes than in most published city profiles: rent takes 16% of median household income and the median home is 2.5 times it.

Natural-hazard exposure is lower than in most comparable published ZIP profiles, placing 20634 in the top 9% for physical resilience.

At a glance

Population
7,088
2024 ACS 5-Year
Median household income
$139,375
Top 5% nationally
Density
1,014/sq mi
7.0 sq mi of land
Median age
32.0
2024 ACS 5-Year
City
California
Maryland
Metro area
Lexington Park, MD
Nearest major airport
BWI
65 mi · Baltimore/Washington Intl Thurgood Marshall
Median home value
$342,300
2024 ACS 5-Year

Jobs & opportunity

Unemployment of 3.5% is lower than 86% of the 6,544 measured US ZIP areas.

Employment fell 1.9% over the past year, to 56,404 employed residents.

40% of adults hold a four-year degree, higher than 80% of measured US ZIP areas.

Household income is higher than at least 95% of measured US ZIP areas.

MetricValueCompared nationallySource period
Median household income ±$17,358$139,375Top 5%of 31,2952024 ACS 5-Year
Per capita income ±$10,202$61,800Top 10%of 32,8222024 ACS 5-Year
Poverty rate4.7%Bottom 18%of 32,9702024 ACS 5-Year
Average commute25.1 minBottom 35%of 32,8872024 ACS 5-Year
Bachelor's degree or higher40.3%Top 20%of 33,1932024 ACS 5-Year
Employment56,404Top 49%of 6,544June 2026
Employment change (3 years)-1.6%Bottom 25%of 6,542June 2026
Employment change (year over year)-1.9%Bottom 21%of 6,544June 2026
Labor force58,468Top 49%of 6,544June 2026
Labor force participation81.8%Top 3%of 33,2522024 ACS 5-Year
Mean annual wage$82,580Top 13%of 6,0722025 OEWS
Median annual wage$63,990Top 8%of 6,0722025 OEWS
Unemployment change (year over year)-0.1%Bottom 43%of 6,544June 2026
Unemployment rate3.5%Bottom 14%of 6,544June 2026
Median household income, successive ACS releases
2021202220232024139k116k
Each point is a separate five-year estimate, most recently $139,375 in the 2024 ACS 5-Year. Consecutive releases share four years of sample, so AreaProfile shows them as a record of successive estimates and does not compute a year-over-year change from them.
Largest occupations — Lexington Park, MD
OccupationPeople employedMedian annual wage
Retail Salespersons2,250$34,360
Business Operations Specialists, All Other2,180$136,660
General and Operations Managers1,990$106,250
Fast Food and Counter Workers1,770$32,240
Cashiers1,560$33,180
Logisticians1,350$131,600

Occupational employment and wages are published for metropolitan areas rather than for individual cities or ZIP areas, so these describe the wider labor market this location sits in. 2025 OEWS, U.S. Bureau of Labor Statistics.

The Bureau of Labor Statistics does not publish labor-force data for ZIP areas. This is the figure for California, MD, the city containing this ZIP code.

7% of students met the state standard in mathematics and 13% in reading, across the schools here that reported results.

There are 16.4 students for every full-time teacher, more than in most measured places.

Public schools
3
2024-25 school year
Students per teacher
16.4
across all schools here
Math proficiency
6.8%
Bottom 24% in Maryland
Reading proficiency
13.5%
Bottom 14% in Maryland
SchoolDistrictStudentsPer teacherMathReading
Great Mills HighSt. Mary's County Public Schools1,69719.3
George Washington Carver ElementarySt. Mary's County Public Schools46012.14%9%
Greenview Knolls ElementarySt. Mary's County Public Schools29412.811%21%

61.0% of students here are eligible for free or reduced-price lunch. That describes the circumstances families arrive with rather than how the schools perform, which is why AreaProfile shows it and does not score it.

Public schools only, from the NCES Common Core of Data. Schools are placed by ZIP code, so this is which schools are in this place rather than which one a particular address is zoned for — district boundaries do not follow municipal ones, and enrollment zones change. Fully virtual schools are excluded: they enroll students from across the state while reporting one administrative address, and counting them here would describe a school population this place does not have. The assessment covers grades 3 through 8, so a high school shows no proficiency figure — a dash in those columns means the test was not given at that school, not that it performed badly. Proficiency is measured against Maryland’s own standard, so it compares cleanly within the state and only broadly against other states; AreaProfile therefore ranks it within state. The directory is current, while the proficiency figures are from the last school year with national coverage before the pandemic interrupted testing.

Housing & affordability

How it’s calculated →

Median rent of $1,814 takes 16% of median household income, below the 30% threshold at which a household is considered cost-burdened.

A median home costs 2.5 times median household income here, close to the historic benchmark for an affordable market.

Rent as a share of income
15.6%
Below the 30% cost-burdened threshold
Home price to income
2.5×
median home value ÷ median income
Median gross rent
$1,814
2024 ACS 5-Year
Median home value
$342,300
2024 ACS 5-Year
MetricValueCompared nationallySource period
Home price to income2.46Bottom 29%of 30,4042024 ACS 5-Year
Homeownership rate65.4%Bottom 22%of 32,9102024 ACS 5-Year
Housing units ±4333,026Top 35%of 33,7722024 ACS 5-Year
Median gross rent ±$184$1,814Top 12%of 26,6182024 ACS 5-Year
Median home value ±$24,952$342,300Top 27%of 30,9412024 ACS 5-Year
Rent as a share of income15.6%Bottom 35%of 26,4702024 ACS 5-Year
Vacancy rate11.0%Top 50%of 33,0282024 ACS 5-Year

Both affordability measures come from the same ACS release as the income they are compared with, so the comparison is like for like. They describe housing cost against local earnings and are not a cost-of-living index — transport, groceries, healthcare, insurance and taxes are not included, and a place can look affordable here and still be expensive to live in for reasons this does not capture.

Growth & development

How it’s calculated →

No building-permit activity is published for this location by the Census Building Permits Survey.

Weather & climate

7 of the twelve months have a normal average temperature between 55°F and 80°F. July averages a high of 87°F and January a low of 30°F.

Normal annual precipitation is 45.3 inches, including 12.5 inches of snow.

20°40°60°80°100°JFMAMJJASOND
Solid line: normal daily high. Dashed line: normal daily low. 1991-2020 normals from NOAA station PATUXENT RIVER NAS, 6.0 miles from this location.
Precipitation
JFMAMJJASOND4.7"
Normal monthly precipitation, in inches.
MetricValueSource period
Annual precipitation45.3"1991-2020 Normals
Annual snowfall12.5"1991-2020 Normals
Average January low30°F1991-2020 Normals
Average July high87°F1991-2020 Normals
Comfortable months71991-2020 Normals
Seasonal temperature swing42°F1991-2020 Normals

Climate figures are thirty-year normals, not current conditions. They describe what a typical year looks like rather than what the weather is doing today.

Physical risk

91 / 100
Physical resilience

The hazards accounting for most of this area's expected annual loss are hurricane, strong wind and coastal flooding.

Overall hazard risk is lower than 78% of measured US ZIP areas.

HurricaneElevated
DroughtElevated
Strong windElevated
Coastal floodingElevated
LightningModerate
LandslideModerate
Cold waveModerate

Low or minimal exposure: heat wave, wildfire, winter weather, earthquake, ice storm, tornado, inland flooding, hail.

Hazard ratings are AreaProfile calculations derived from the FEMA National Risk Index v1.20.0 (December 2025). FEMA publishes at county level. ZIP values are the land-area-weighted mean of the counties the ZIP Code Tabulation Area intersects. Expected annual loss is not allocated below county level. FEMA does not endorse this presentation. Higher physical resilience means lower exposure.

These are deaths, not offences. AreaProfile does not publish reported crime, and this is not a substitute for it — it says nothing about burglary, theft or assault.

St. Mary's County records 2.6 homicide deaths per 100,000 residents a year, near the middle of counties measured. The CDC does not publish this below county level.

Firearm deaths of all intents run at 10.4 per 100,000 — more than the homicide rate, because nationally most firearm deaths are suicides.

Drug overdose deaths run at 14.7 per 100,000 residents in St. Mary's County.

Homicide
2.6
per 100,000 residents · under 10 deaths
Firearm deaths, all intents
10.4
per 100,000 residents · under 10 deaths
Drug overdose
14.7
per 100,000 residents · under 10 deaths
Suicide
13.9
per 100,000 residents · under 10 deaths

Firearm deaths count every intent together, and nationally the majority are suicides rather than homicides. The two columns overlap and should not be added.

Age-adjusted rates from provisional death certificate records, published by the CDC for St. Mary's County as a whole — these rates are not published below county level. A county can hold both a dense city centre and a suburb whose experience of it is nothing alike, so this describes the county around 20634 rather than 20634 itself. That is why AreaProfile shows these figures and does not put them in the Area Score. Where fewer than ten deaths were recorded the count is suppressed at source, and a rate built on single figures moves sharply between releases. What this measure has that reported crime does not: a death certificate is filed whether or not the local police agency submitted a return that year, so the figures stay comparable between places and over time.

What this profile does not cover

Three things people look for are missing from every AreaProfile page, and each is missing for a reason rather than by oversight. The Area Score is calculated without them and the weighting is documented on the methodology page.

Reported crime
Offences reported to police are published by department rather than by town, and only where a department reported every month of the year. No municipal department reports for this place — many smaller communities are policed by the county — so there is no figure to show. A partial year is never scaled up to look complete, and arrest counts or news volume are never substituted for it.
Taxes and full cost of living
No public source publishes either with national coverage and a method open enough to check. Housing affordability above is computed from published rent, price and income, and excludes transport, groceries, healthcare, insurance and taxes — commuting cost in particular tends to offset suburban housing savings. Nothing here is individualised tax advice.
Anything about a specific address
Every figure describes an area, not a street or a house. School attendance zones, insurance pricing and the character of a neighbourhood all vary within the places measured here.

Access

4 major airports lie within 100 miles, the nearest 65 miles away.

AirportCodeDistanceLongest runway
Baltimore/Washington Intl Thurgood MarshallBWI65 mi10,503 ft
Richmond IntlRIC68 mi9,003 ft
Washington Dulles IntlIAD71 mi11,500 ft

Airport identity, position and runway data come from the FAA. “Major airport” is an AreaProfile classification — a public-use civil airport with a paved runway of at least 8,000 feet — not an FAA hub designation. Distances are straight-line, not driving distance.

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Data & methodology

Used forSourceSource periodUpdated
AccessFederal Aviation Administration
Airports (NASR) — Aeronautical Data Delivery Service
NASR current cycle28-day NASR cycle
Physical riskFederal Emergency Management Agency
National Risk Index
National Risk Index December 2025 (v1.20.0)Periodic dataset versions (v1.20.0 current)
ClimateNOAA National Centers for Environmental Information
U.S. Climate Normals 1991–2020 (Monthly)
1991-2020 NormalsEvery ten years (next release follows the 2001–2030 period)
JobsU.S. Bureau of Labor Statistics
Occupational Employment and Wage Statistics
2025 OEWSAnnual (spring release)
JobsU.S. Bureau of Labor Statistics
Local Area Unemployment Statistics
June 2026Monthly
Demographics, Housing, Income, JobsU.S. Census Bureau
American Community Survey 5-Year Estimates (Table-Based Summary File)
2024 ACS 5-YearAnnual (5-year estimates released each December)
safetyU.S. Centers for Disease Control and Prevention, National Center for Health Statistics
Provisional county-level mortality by intent
April, 2025 to March, 2026Quarterly, with a rolling twelve-month window alongside complete calendar years
schoolsU.S. Department of Education, National Center for Education Statistics
Common Core of Data and EDFacts assessments
2019-20 school year; 2024-25 school yearDirectory annually; assessment results as EDFacts releases them

Profile recalculated August 30, 2026. Recalculation is not the same as new source data — each figure above shows the period its source actually covers. Read the full methodology or browse every source.

20634 vs California

How this ZIP area compares with California as a whole. Both figures come from the same ACS release, so the comparison is like for like.

20634
California
Median household income
$139,375
vs
$119,855
Per capita income
$61,800
vs
$60,197
Population density
1,014/sq mi
vs
1,021/sq mi
Median home value
$342,300
vs
$346,800
Median gross rent
$1,814
vs
$1,927
Homeownership rate
65.4%
vs
62.9%
Bachelor's degree or higher
40.3%
vs
43.8%
Poverty rate
4.7%
vs
6.9%
Median age
32.0
vs
35.0

Some demographic statistics use Census ZIP Code Tabulation Areas, which approximate but do not exactly match USPS ZIP delivery geography. See the methodology for how AreaProfile maps between them.