Residential delivery area · Maryland
ZIP Code 20688: Solomons, MD
ZIP code 20688 is in Solomons, Maryland, entirely in Calvert County (Census 2020 ZIP-county file). About 1,300 people live there (Census Bureau, ACS 2020-2024). Median household income is $102,950 (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
- FHFA2022
- ZBP2023
- IRS2022
- Town
- Solomons · its only residential ZIP
- County
- Calvert County
- Census places
- Solomons census-designated place
- Metro area
- Lexington Park, MD
- House district
- MD-5 119th Congress
- State
- Maryland
- Time zone
- Eastern
- Land area
- 1.2 sq mi · 1,120 people per sq mi
Where is ZIP code 20688?
20688 centers on 38.327°, -76.464° and covers 1.2 square miles of land plus 2.3 of water. It borders 4 ZIP codes: 20629, 20619, 20657, 20636.
The map draws ZIP code areas only. For the streets inside 20688, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 20688 compare with the rest of Calvert County?
| Measure | 20688 | In Calvert County | In MD |
|---|---|---|---|
| People (ACS 2020-2024) | 1,290 | 11th of 14 | 337th of 477 |
| Median household income | $103k | not ranked | not ranked |
| Median home value | $619k | not ranked | not ranked |
20688's median household income is not ranked: its 90% margin of error (±$57,318) is more than a quarter of the figure ($102,950); 20688's median home value is not ranked: its 90% margin of error (±$493,247) is more than a quarter of the figure ($619,200). Rankings use ZIP codes of 1,000 or more people living in households, with margins at most 25% of the figure.
It is denser than 79% of U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 20688?
The 2020 Census counted 1,462 people in 20688; the ACS, which samples households over 2020-2024, estimates 1,290. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 1,290±576 (90% margin)
- 2020 Census count
- 1,462
- Households
- 651
- Median age
- 63.8
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 20688?
Of the 1,290 people the ACS estimates in 20688, 9.0% are under 18 and 46.7% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (97.8%).
- Under 189.0%
- 18 to 6444.3%
- 65 and older46.7%
- White, not Hispanic97.8%
- Hispanic or Latino1.9%
- Black, not Hispanic0.2%
- Other or two or more0.1%
- Asian, not Hispanic0.0%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 20688 earn?
Median household income is $102,950 (ACS 2020-2024).
- Median household income
- $102,950±$57,318
- Income per person
- $58,614
- Below the poverty line
- 0.2%
- Unemployed (of the labor force)
- 8.4%
- Adults 25+ with a bachelor's degree
- 42.6%
- Adjusted gross income per tax return, 2022
- $115,4461,510 returns; wages 45% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 20688?
- Median home value (owners' estimate)
- $619,200
- Median gross rent
- $3,222
- Homes owned by their occupants
- 48.5%
- Housing units
- 717
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 20688?
108 business establishments had a location in this ZIP code in 2023, 5 more than in 2018; the most are in accommodation and food services (ZIP Code Business Patterns).
- Accommodation and food services28
- Health care and social assistance16
- Other services (except public administration)13
- Retail trade11
- Real estate and rental and leasing9
- Professional, scientific, and technical services9
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 20688?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 20629 | Dowell | 1,150 | $87k | 1.2 mi |
| 20619 | California | 14,212 | $119k | 4.2 mi |
| 20657 | Lusby | 20,699 | $116k | 4.1 mi |
| 20636 | Hollywood | 10,486 | $164k | 5.8 mi |
| 20670 | Patuxent River | 2,046 | $70k | 4.2 mi (near) |
| 20634 | Great Mills | 7,088 | $139k | 6.2 mi (near) |
| 20653 | Lexington Park | 26,852 | $103k | 6.5 mi (near) |
| 20620 | Callaway | 1,115 | $166k | 7.2 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.