20657 ZIP Code, Lusby, MD
20657 is a ZIP code in Lusby, Maryland in Calvert County. It covers 30 square miles of land. The closest ZIP codes are 20629, 20688 and 20685. 20,699 people live here in 7,371 households. With about 693 people per square mile it is lightly settled, and most homes are owner-occupied (87%). Median household income is $115,748, above the Maryland median of $103,678.
Quick facts
- Mailing city: Lusby, MD
- County: Calvert County
- Land area: 30 sq mi
- Population: 20,699
- Median household income: $115,748
- Carrier routes: 21 (7,336 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 20,699 |
| Households | 7,371 |
| Median household income | $115,748 |
| Income per person | $54,496 |
| Median age | 37.4 |
| Homeowners | 87.2% |
| Median home value | $333,500 |
| Median rent | $1,755 |
| Bachelor's degree or higher | 33.3% |
| Average commute (minutes) | 38.9 |
| Households with kids under 18 | 34.6% |
| Moved in the past year | 10.3% |
| Below the poverty line | 3.8% |
| Broadband internet | 96.2% |
| Speak a non-English language at home | 7.6% |
Household income
| % of households | Value |
|---|---|
| <$10K | 2.3% |
| $10–15K | 0.3% |
| $15–25K | 3.0% |
| $25–35K | 3.0% |
| $35–50K | 6.0% |
| $50–75K | 11.3% |
| $75–100K | 14.8% |
| $100–150K | 22.5% |
| $150–200K | 15.2% |
| $200K+ | 21.6% |
Age
| % of all residents | Value |
|---|---|
| <10 | 11.4% |
| 10–19 | 12.1% |
| 20–24 | 7.1% |
| 25–34 | 14.9% |
| 35–44 | 14.4% |
| 45–54 | 11.7% |
| 55–64 | 15.7% |
| 65–74 | 8.3% |
| 75+ | 4.5% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 65.5% |
| Owned outright | 13.4% |
| Rented | 11.4% |
| Vacant | 9.8% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 97.7% |
| Townhome | 0.0% |
| 2–4 units | 0.1% |
| 5–19 units | 0.8% |
| 20+ units | 1.3% |
| Mobile / other | 0.0% |
Businesses in 20657
181 business establishments with 2,217 employees (ZIP Codes Business Patterns 2023).
- Other Services (except Public Administration): 30
- Professional, Scientific, and Technical Services: 28
- Construction: 26
- Accommodation and Food Services: 20
- Retail Trade: 17
- Health Care and Social Assistance: 12
- Real Estate and Rental and Leasing: 9
- Administrative and Support and Waste Management and Remediation Services: 9
EDDM carrier routes
20657 has 21 USPS carrier routes with 7,336 residential and 97 business mailboxes. Open the EDDM route map.
Carrier routes in 20657
20657 has 21 USPS carrier routes (21 highway contract (H)) with 7,336 residential and 97 business mailboxes. Routes range from 258 homes (H008) to 493 homes (H001); the median route has 341 homes. The Census counted 7,371 households in 20657 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 21 |
| 500–749 | 0 |
| 750–999 | 0 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 20657 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route H012 — USPS business mailboxes 72, 303 homes
- Route H003 — USPS business mailboxes 12, 299 homes
- Route H005 — USPS business mailboxes 3, 364 homes
- Route H013 — USPS business mailboxes 3, 292 homes
- Route H015 — USPS business mailboxes 2, 488 homes
Select these 5 routes on the route map
Every carrier route in 20657
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| H001 | Highway contract | 493 | 0 | $118,414 | — | — | — |
| H002 | Highway contract | 302 | 1 | $103,655 | — | — | — |
| H003 | Highway contract | 299 | 12 | $118,414 | — | — | — |
| H004 | Highway contract | 290 | 1 | $110,347 | — | — | — |
| H005 | Highway contract | 364 | 3 | $110,347 | — | — | — |
| H006 | Highway contract | 341 | 2 | $129,048 | — | — | — |
| H007 | Highway contract | 385 | 0 | $129,048 | — | — | — |
| H008 | Highway contract | 258 | 0 | $72,930 | — | — | — |
| H009 | Highway contract | 396 | 0 | $103,655 | — | — | — |
| H011 | Highway contract | 360 | 0 | $118,414 | — | — | — |
| H012 | Highway contract | 303 | 72 | $107,801 | — | — | — |
| H013 | Highway contract | 292 | 3 | $107,801 | — | — | — |
| H014 | Highway contract | 275 | 0 | $118,662 | — | — | — |
| H015 | Highway contract | 488 | 2 | $118,662 | — | — | — |
| H016 | Highway contract | 324 | 0 | $129,048 | — | — | — |
| H017 | Highway contract | 360 | 0 | $106,915 | — | — | — |
| H018 | Highway contract | 422 | 0 | $72,930 | — | — | — |
| H019 | Highway contract | 449 | 1 | $102,157 | — | — | — |
| H022 | Highway contract | 386 | 0 | $103,655 | — | — | — |
| H028 | Highway contract | 289 | 0 | $103,655 | — | — | — |
| H029 | Highway contract | 260 | 0 | $129,048 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 20657 on the EDDM route map.
How route demographics are estimated
Mailbox counts come from USPS; demographics are estimates
The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).
How a route gets its figures: the block-group length-share method
We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.
Margins of error
Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.
Different years
USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.
Why some routes show identical figures
Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.
Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
Nearby ZIP codes
- 20629 — Solomons CDP, MD (2.9 mi)
- 20688 — Solomons CDP, MD (4.1 mi)
- 20685 — St. Leonard CDP, MD (5.9 mi)
- 20615 — Broomes Island CDP, MD (6.2 mi)
- 20670 (7.1 mi)
- 20636 (7.2 mi)
- 20619 — California CDP, MD (7.9 mi)
- 20676 — St. Leonard CDP, MD (9.1 mi)
Areas that include 20657
- Chesapeake Ranch Estates, MD ZIP codes — 1 ZIP code
- Drum Point, MD ZIP codes — 1 ZIP code
- Lusby, MD ZIP codes — 1 ZIP code
- Calvert County ZIP codes — 13 ZIP codes
- Maryland ZIP code data
Where it ranks
- No. 5 of 12: highest share of households with children in Calvert County
- No. 2 of 12: lowest median age in Calvert County
- No. 2 of 11: fastest population growth in Calvert County
Mail every home in 20657
Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.
EDDM guides
ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 20657, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 20657 in?
- 20657 is a Lusby, MD mailing address. By land area, 14% lies inside Chesapeake Ranch Estates, 12% lies inside Lusby and 6% lies inside Drum Point; the rest is outside any Census-defined city or community.
- What county is 20657 in?
- 20657 is in Calvert County.
- What is the population of 20657?
- About 20,699 people (±1,384), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 20,042.
- What is the median household income in 20657?
- $115,748 (±$9,564), compared with $103,678 for Maryland as a whole. Half the households in the ZIP code earn more and half earn less.
- How many carrier routes and mailboxes are in 20657?
- 21 USPS carrier routes with 7,336 residential and 97 business mailboxes (7,433 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 20657?
- The closest, measured center to center: 20629 (2.9 mi, Solomons), 20688 (4.1 mi, Solomons), 20685 (5.9 mi, St. Leonard), 20615 (6.2 mi, Broomes Island), 20670 (7.1 mi) and 20636 (7.2 mi).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.