39520 ZIP Code, Bay Saint Louis, MS
39520 is a ZIP code in Bay Saint Louis, Mississippi in Hancock County. It covers 97 square miles of land. The closest ZIP codes are 39576, 39572 and 39525. 15,561 people live here in 7,213 households. With about 161 people per square mile it is lightly settled, and most homes are owner-occupied (75%). Median household income is $62,176, above the Mississippi median of $56,447; the median age is 50.2, older than most ZIP codes.
Quick facts
- Mailing city: Bay Saint Louis, MS
- County: Hancock County
- Land area: 97 sq mi
- Population: 15,561
- Median household income: $62,176
- Carrier routes: 10 (7,054 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 15,561 |
| Households | 7,213 |
| Median household income | $62,176 |
| Income per person | $45,585 |
| Median age | 50.2 |
| Homeowners | 75.0% |
| Median home value | $225,600 |
| Median rent | $1,127 |
| Bachelor's degree or higher | 30.8% |
| Average commute (minutes) | 27.6 |
| Households with kids under 18 | 25.7% |
| Moved in the past year | 12.6% |
| Below the poverty line | 16.5% |
| Broadband internet | 89.6% |
| Speak a non-English language at home | 4.4% |
Household income
| % of households | Value |
|---|---|
| <$10K | 5.9% |
| $10–15K | 4.5% |
| $15–25K | 9.6% |
| $25–35K | 7.2% |
| $35–50K | 12.6% |
| $50–75K | 17.6% |
| $75–100K | 10.2% |
| $100–150K | 15.1% |
| $150–200K | 7.8% |
| $200K+ | 9.4% |
Age
| % of all residents | Value |
|---|---|
| <10 | 8.7% |
| 10–19 | 12.0% |
| 20–24 | 3.1% |
| 25–34 | 10.0% |
| 35–44 | 9.6% |
| 45–54 | 16.3% |
| 55–64 | 16.0% |
| 65–74 | 16.1% |
| 75+ | 8.1% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 29.1% |
| Owned outright | 31.1% |
| Rented | 20.0% |
| Vacant | 19.7% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 79.0% |
| Townhome | 1.8% |
| 2–4 units | 3.8% |
| 5–19 units | 3.6% |
| 20+ units | 3.4% |
| Mobile / other | 8.3% |
Businesses in 39520
346 business establishments with 3,909 employees (ZIP Codes Business Patterns 2023).
- Accommodation and Food Services: 65
- Retail Trade: 48
- Health Care and Social Assistance: 39
- Professional, Scientific, and Technical Services: 36
- Other Services (except Public Administration): 30
- Finance and Insurance: 26
- Construction: 23
- Real Estate and Rental and Leasing: 18
EDDM carrier routes
39520 has 10 USPS carrier routes with 7,054 residential and 495 business mailboxes. Open the EDDM route map.
Carrier routes in 39520
39520 has 10 USPS carrier routes (3 city (C), 7 rural (R)) with 7,054 residential and 495 business mailboxes. Routes range from 456 homes (R002) to 1,036 homes (C003); the median route has 653 homes. The Census counted 7,213 households in 39520 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 1 |
| 500–749 | 6 |
| 750–999 | 2 |
| 1,000–1,499 | 1 |
| 1,500+ | 0 |
Best routes in 39520 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C001 — USPS business mailboxes 154, 936 homes
- Route C004 — USPS business mailboxes 104, 847 homes
- Route C003 — USPS business mailboxes 65, 1,036 homes
- Route R014 — USPS business mailboxes 43, 653 homes
- Route R006 — USPS business mailboxes 36, 553 homes
Select these 5 routes on the route map
Every carrier route in 39520
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C001 | City | 936 | 154 | $50,192 | — | — | — |
| C003 | City | 1,036 | 65 | $96,479 | — | — | — |
| C004 | City | 847 | 104 | $27,019 | — | — | — |
| R002 | Rural | 456 | 31 | $73,345 | — | — | — |
| R004 | Rural | 636 | 23 | $23,304 | — | — | — |
| R006 | Rural | 553 | 36 | $50,192 | — | — | — |
| R007 | Rural | 727 | 1 | $155,570 | — | — | — |
| R012 | Rural | 558 | 25 | $50,192 | — | — | — |
| R014 | Rural | 653 | 43 | $48,437 | — | — | — |
| R017 | Rural | 652 | 13 | $38,212 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 39520 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
- 39576 — Waveland city, MS (6 mi)
- 39572 — Pearlington CDP, MS (7.5 mi)
- 39525 — Diamondhead city, MS (10.2 mi)
- 39529 (10.4 mi)
- 39556 — Kiln CDP, MS (12.3 mi)
- 70461 — Slidell city, LA (13.9 mi)
- 39571 — Pass Christian city, MS (16.1 mi)
- 70458 — Slidell city, LA (18.7 mi)
Areas that include 39520
- Bay St. Louis, MS ZIP codes — 1 ZIP code
- Waveland, MS ZIP codes — 2 ZIP codes
- Bay Saint Louis, MS ZIP codes — 1 ZIP code
- Hancock County ZIP codes — 9 ZIP codes
- Mississippi ZIP code data
Where it ranks
- No. 5 of 8: highest median household income in Hancock County
- No. 3 of 8: highest median home value in Hancock County
- No. 3 of 8: highest share of residents who moved in during the past year in Hancock County
- No. 1 of 8: highest median age in Hancock County
Mail every home in 39520
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) 39520, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 39520 in?
- 39520 is a Bay Saint Louis, MS mailing address. By land area, 15% lies inside Bay St. Louis and 2% lies inside Waveland; the rest is outside any Census-defined city or community.
- What county is 39520 in?
- 39520 is in Hancock County.
- What is the population of 39520?
- About 15,561 people (±821), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 14,963.
- What is the median household income in 39520?
- $62,176 (±$10,111), compared with $56,447 for Mississippi as a whole. Half the households in the ZIP code earn more and half earn less.
- How many carrier routes and mailboxes are in 39520?
- 10 USPS carrier routes with 7,054 residential and 495 business mailboxes (7,524 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 39520?
- The closest, measured center to center: 39576 (6 mi, Waveland), 39572 (7.5 mi, Pearlington), 39525 (10.2 mi, Diamondhead), 39529 (10.4 mi), 39556 (12.3 mi, Kiln) and 70461 (13.9 mi, Slidell).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.