40047 ZIP Code, Mount Washington, KY
40047 is a ZIP code in Mount Washington, Kentucky in Bullitt County. It covers 30 square miles of land. The closest ZIP codes are 40291, 40229 and 40013. 23,662 people live here in 8,881 households, more than in 9 of every 10 Kentucky ZIP codes. With about 792 people per square mile it is lightly settled, and most homes are owner-occupied (89%). Median household income is $99,124, well above the Kentucky median of $63,726.
Quick facts
- Mailing city: Mount Washington, KY
- County: Bullitt County
- Land area: 30 sq mi
- Population: 23,662
- Median household income: $99,124
- Carrier routes: 19 (10,127 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 23,662 |
| Households | 8,881 |
| Median household income | $99,124 |
| Income per person | $43,356 |
| Median age | 40.3 |
| Homeowners | 88.8% |
| Median home value | $279,400 |
| Median rent | $1,027 |
| Bachelor's degree or higher | 26.2% |
| Average commute (minutes) | 31.5 |
| Households with kids under 18 | 36.2% |
| Moved in the past year | 8.3% |
| Below the poverty line | 4.7% |
| Broadband internet | 95.9% |
| Speak a non-English language at home | 2.3% |
Household income
| % of households | Value |
|---|---|
| <$10K | 2.2% |
| $10–15K | 1.4% |
| $15–25K | 5.3% |
| $25–35K | 5.1% |
| $35–50K | 7.9% |
| $50–75K | 14.0% |
| $75–100K | 14.7% |
| $100–150K | 25.7% |
| $150–200K | 11.9% |
| $200K+ | 11.7% |
Age
| % of all residents | Value |
|---|---|
| <10 | 12.7% |
| 10–19 | 13.4% |
| 20–24 | 5.2% |
| 25–34 | 11.7% |
| 35–44 | 14.6% |
| 45–54 | 13.6% |
| 55–64 | 13.1% |
| 65–74 | 9.8% |
| 75+ | 6.0% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 64.7% |
| Owned outright | 20.9% |
| Rented | 10.4% |
| Vacant | 4.0% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 85.0% |
| Townhome | 4.2% |
| 2–4 units | 4.8% |
| 5–19 units | 3.3% |
| 20+ units | 0.8% |
| Mobile / other | 2.0% |
Businesses in 40047
335 business establishments with 4,476 employees (ZIP Codes Business Patterns 2023).
- Construction: 60
- Retail Trade: 47
- Health Care and Social Assistance: 39
- Other Services (except Public Administration): 39
- Accommodation and Food Services: 30
- Professional, Scientific, and Technical Services: 28
- Finance and Insurance: 21
- Administrative and Support and Waste Management and Remediation Services: 21
EDDM carrier routes
40047 has 19 USPS carrier routes with 10,127 residential and 249 business mailboxes. Open the EDDM route map.
Carrier routes in 40047
40047 has 19 USPS carrier routes (19 highway contract (H)) with 10,127 residential and 249 business mailboxes. Routes range from 342 homes (H087) to 851 homes (H091); the median route has 513 homes. The Census counted 8,881 households in 40047 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 9 |
| 500–749 | 9 |
| 750–999 | 1 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 40047 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route H070 — USPS business mailboxes 70, 391 homes
- Route H091 — USPS business mailboxes 59, 851 homes
- Route H072 — USPS business mailboxes 40, 630 homes
- Route H087 — USPS business mailboxes 40, 342 homes
- Route H060 — USPS business mailboxes 7, 571 homes
Select these 5 routes on the route map
Every carrier route in 40047
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| H060 | Highway contract | 571 | 7 | $90,302 | — | — | — |
| H061 | Highway contract | 397 | 0 | $68,316 | — | — | — |
| H062 | Highway contract | 382 | 5 | $102,961 | — | — | — |
| H063 | Highway contract | 424 | 4 | $101,250 | — | — | — |
| H070 | Highway contract | 391 | 70 | $68,541 | — | — | — |
| H071 | Highway contract | 672 | 3 | $101,250 | — | — | — |
| H072 | Highway contract | 630 | 40 | $99,619 | — | — | — |
| H073 | Highway contract | 584 | 1 | $126,715 | — | — | — |
| H075 | Highway contract | 415 | 5 | $76,721 | — | — | — |
| H080 | Highway contract | 687 | 0 | $92,777 | — | — | — |
| H082 | Highway contract | 470 | 4 | $99,619 | — | — | — |
| H085 | Highway contract | 438 | 4 | $90,302 | — | — | — |
| H086 | Highway contract | 668 | 0 | $101,250 | — | — | — |
| H087 | Highway contract | 342 | 40 | $102,273 | — | — | — |
| H090 | Highway contract | 513 | 3 | $92,777 | — | — | — |
| H091 | Highway contract | 851 | 59 | $76,721 | — | — | — |
| H094 | Highway contract | 409 | 2 | $102,961 | — | — | — |
| H098 | Highway contract | 582 | 2 | $90,302 | — | — | — |
| H099 | Highway contract | 701 | 0 | $126,715 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 40047 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
- 40291 — Louisville/Jefferson County metro government (balance), KY (6.4 mi)
- 40229 — Louisville/Jefferson County metro government (balance), KY (6.8 mi)
- 40013 — Fairfield city, KY (7.6 mi)
- 40165 — Shepherdsville city, KY (8.2 mi)
- 40299 — Louisville/Jefferson County metro government (balance), KY (8.3 mi)
- 40110 — Shepherdsville city, KY (8.4 mi)
- 40228 — Louisville/Jefferson County metro government (balance), KY (8.4 mi)
- 40071 — Elk Creek CDP, KY (9.6 mi)
Areas that include 40047
- Mount Washington, KY ZIP codes — 1 ZIP code
- Bullitt County ZIP codes — 7 ZIP codes
- Kentucky ZIP code data
Where it ranks
- No. 1 of 6: highest median household income in Bullitt County
- No. 1 of 6: highest median home value in Bullitt County
- No. 2 of 6: highest share of owner-occupied homes in Bullitt County
- No. 2 of 6: highest share of households with children in Bullitt County
- No. 4 of 6: highest share of residents who moved in during the past year in Bullitt County
- No. 3 of 6: lowest median age in Bullitt County
- No. 4 of 6: highest median age in Bullitt County
- No. 2 of 6: fastest population growth in Bullitt County
Mail every home in 40047
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) 40047, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 40047 in?
- 40047 is a Mount Washington, KY mailing address. By land area, 31% lies inside Mount Washington; the rest is outside any Census-defined city or community.
- What county is 40047 in?
- 40047 is in Bullitt County.
- What is the population of 40047?
- About 23,662 people (±671), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 23,597.
- What is the median household income in 40047?
- $99,124 (±$4,768), compared with $63,726 for Kentucky as a whole. Half the households in the ZIP code earn more and half earn less.
- How many carrier routes and mailboxes are in 40047?
- 19 USPS carrier routes with 10,127 residential and 249 business mailboxes (10,376 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 40047?
- The closest, measured center to center: 40291 (6.4 mi, Louisville/Jefferson County metro government (balance), KY), 40229 (6.8 mi, Louisville/Jefferson County metro government (balance), KY), 40013 (7.6 mi, Fairfield), 40165 (8.2 mi, Shepherdsville), 40299 (8.3 mi, Louisville/Jefferson County metro government (balance), KY) and 40110 (8.4 mi, Shepherdsville).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.