ZIP Code 20628, Maryland
ZIP Code 20628 profile, demographic data, and geographic information.
ZCTA5 20628 is a 5-digit ZIP Code area located in St. Mary's County, Maryland. As of official census estimates, it has a reported population of 503. The land area covers 6.49 sq mi. [1]
Demographics & Population
| Demographic Metric | Estimate / Count | Margin of Error | Survey Period / Source |
|---|---|---|---|
| Total Population | 503 | ±308 | 2020-2024 / Census ACS 5-Year 2024 |
| Median Age | 35.9 yrs | ±12.7 | 2020-2024 / Census ACS 5-Year 2024 |
| Total Households | 199 | ±126 | 2020-2024 / Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).
Housing & Real Estate Profile
| Housing Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Total Housing Units | 268 | ±154 |
| Occupied Housing Units | 199 | ±126 |
| Vacant Housing Units | 69 | ±74 |
| Median Home Value | $545,800 | ±$124,673 |
| Median Gross Rent | Suppressed | — |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Economy & Workforce
| Economic Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Median Household Income | Suppressed | — |
| Per Capita Income | $60,310 | ±$12,565 |
| Poverty Rate | 4.6% | ±7.4% |
| Population Below Poverty Level | 23 | ±40 |
| Unemployment Rate | 9.1% | ±14.8% |
| Civilian Labor Force, Employed | 231 | ±130 |
| Broadband Internet Rate | 100% | ±0% |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Local Government & Public Administration
Authoritative general-purpose local government units serving this area
U.S. Census Bureau GUS (2026) / GMAF
| Government Unit | Unit Type | Jurisdiction Role | Contact / Address |
|---|---|---|---|
|
GUS Population: 116,469 (2024)
ID: 208243
|
County | Official County Government |
Contact: ACCOUNTING OFFICER
PO BOX 653, LEONARDTOWN MD 20650-0653
|
Education
Listing 10 local institutions (NCES 2024-2025)
External reference via K12Guides
| Institution | Type | Grades | Location |
|---|---|---|---|
| Regular School Nearby | KG-08 | Lexington Park, MD | |
| Regular School Nearby | PK-05 | Lusby, MD | |
| Career and Technical School Nearby | 09-12 | Leonardtown, MD | |
| Regular School Nearby | 06-08 | Lexington Park, MD | |
| Regular School Nearby | PK-05 | California, MD | |
| Regular School Nearby | PK-05 | Great Mills, MD | |
| Regular School Nearby | 09-12 | Great Mills, MD | |
| Regular School Nearby | PK-05 | Lexington Park, MD | |
| Regular School Nearby | PK-05 | Great Mills, MD | |
| Regular School Nearby | PK-05 | Hollywood, MD |
Source: k12guides.com.
Community Facilities & Infrastructure
Displaying 9 civic institutions across 2 datasets queried
CMS • IPEDS • IMLS
| Facility Name | Category | Relationship | Address / Location | Contact |
|---|---|---|---|---|
|
St. Mary's College of Maryland
|
College | 5.5 mi away | 47645 College Drive, St. Mary's City, MD, 20686 |
2408952000
|
|
LEXINGTON PARK BRANCH
|
Library | 9.8 mi away | 21677 FDR BLVD, LEXINGTON PARK, MD, 20653 |
(301) 863-8188
|
|
SOUTHERN BRANCH
|
Library | 14.4 mi away | 13920 HG TRUEMAN RD, SOLOMONS, MD, 20688 |
(410) 326-5289
|
|
NEWTON BRANCH
|
Library | 17.6 mi away | 22 COLES POINT RD, HAGUE, VA, 22469 |
(804) 472-3820
|
|
MOBILE LIBRARY
|
Library | 17.8 mi away | 7204 NORTHUMBERLAND HIGHWAY, HEATHSVILLE, VA, 22473 |
(804) 580-5051
|
|
NORTHUMBERLAND PUBLIC LIBRARY
|
Library | 17.8 mi away | 7204 NORTHUMBERLAND HIGHWAY, HEATHSVILLE, VA, 22473 |
(804) 580-5051
|
|
LEONARDTOWN BRANCH
|
Library | 19.5 mi away | 23630 HAYDEN FARM LN., LEONARDTOWN, MD, 20650 |
(301) 475-2846
|
|
MOBILE LIBRARY
|
Library | 19.5 mi away | 23630 HAYDEN FARM LN, LEONARDTOWN, MD, 20650 |
(301) 475-2846
|
|
EWELL LIBRARY
|
Library | 20.0 mi away | 20910 CALEB JONES RD., EWELL, MD, 21824 |
(410) 425-2181
|
Distances calculated from authoritative source coordinates. Source: CMS, IMLS, NCES IPEDS.
Climate & Weather Observations
NOAA Monthly Climate Normals
Observation Station: Climate data reflects NOAA 1991–2020 standard normals recorded at ST INIGOES WEBSTER NOLF, MD US, located 4.9 miles from ZCTA5 20628. Local microclimates, topography, and elevation may cause municipal conditions to differ.
| Month | High (°F) | Low (°F) | Mean (°F) | Precip (in) | Snow (in) |
|---|---|---|---|---|---|
| January | 45.6° | 30.1° | 37.8° | 3.26" | — |
| February | 48.3° | 31.4° | 39.8° | 2.81" | — |
| March | 55.7° | 37.2° | 46.4° | 3.90" | — |
| April | 67.0° | 46.8° | 56.9° | 3.97" | — |
| May | 75.2° | 56.7° | 66.0° | 3.92" | — |
| June | 84.5° | 66.1° | 75.3° | 4.04" | — |
| July | 87.2° | 71.2° | 79.2° | 4.85" | — |
| August | 85.0° | 68.0° | 76.5° | 4.56" | — |
| September | 79.4° | 61.9° | 70.7° | 4.34" | — |
| October | 69.1° | 51.2° | 60.1° | 4.22" | — |
| November | 58.5° | 41.4° | 49.9° | 3.13" | — |
| December | 49.7° | 33.3° | 41.5° | 3.32" | — |
Source: NOAA U.S. Climate Normals (1991–2020).
Local Weather Forecast
Weather forecast data is currently unavailable in the local cache.
Nearby Cities & Communities
Listing adjacent communities by spatial proximity (miles)
Proximity discovery
| Community Name | Classification | Distance | Population |
|---|---|---|---|
| St. George Island CDP | CDP | 7.9 mi | — |
| Lexington Park CDP | CDP | 8.7 mi | — |
| Piney Point CDP | CDP | 9.9 mi | — |
| Tall Timbers CDP | CDP | 10.7 mi | — |
| Callaway CDP | CDP | 12.1 mi | — |
| California CDP | CDP | 13.0 mi | — |
Sources & Data Provenance
- Geographic Classification & Identifiers: U.S. Census Bureau Gazetteer (2026) and TIGER/Line Shapefiles. GEOID: 20628. • Official Source Dataset →
- Socioeconomic & Housing Metrics: U.S. Census Bureau American Community Survey (ACS) 5-year estimates and Population Estimates Program (PEP). Margin of Error (MOE) intervals are reported where published; suppressed values are never estimated or replaced with false zeros.
- Civic Directory Datasets: Centers for Medicare & Medicaid Services (CMS Hospital Directory), National Center for Education Statistics (NCES IPEDS Postsecondary Directory), and Institute of Museum and Library Services (IMLS Public Libraries Survey). Airport landing facilities are provided by airport-data.com.
- Weather & Climate Observations: National Oceanic and Atmospheric Administration (NOAA) U.S. Climate Normals 1991–2020 and National Weather Service (NWS) point forecasts.