04862 ZIP Code, Union, ME
04862 is a ZIP code in Union, Maine in Knox County. It covers 65 square miles of land. The closest ZIP codes are 04847, 04574 and 04949. 4,023 people live here in 1,725 households. It is rural, with fewer than 100 people per square mile, and most homes are owner-occupied (85%). Median household income is $73,536, close to the Maine median of $74,733.
Quick facts
- Mailing city: Union, ME
- County: Knox County
- Land area: 65 sq mi
- Population: 4,023
- Median household income: $73,536
- Carrier routes: 3 (1,425 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 4,023 |
| Households | 1,725 |
| Median household income | $73,536 |
| Income per person | $38,617 |
| Median age | 43.2 |
| Homeowners | 84.6% |
| Median home value | $252,300 |
| Median rent | $1,125 |
| Bachelor's degree or higher | 34.3% |
| Average commute (minutes) | 29.7 |
| Households with kids under 18 | 23.9% |
| Moved in the past year | 3.1% |
| Below the poverty line | 10.0% |
| Broadband internet | 87.1% |
| Speak a non-English language at home | 1.3% |
Household income
| % of households | Value |
|---|---|
| <$10K | 6.3% |
| $10–15K | 2.1% |
| $15–25K | 3.9% |
| $25–35K | 9.2% |
| $35–50K | 14.2% |
| $50–75K | 15.5% |
| $75–100K | 13.5% |
| $100–150K | 20.0% |
| $150–200K | 7.7% |
| $200K+ | 7.7% |
Age
| % of all residents | Value |
|---|---|
| <10 | 13.8% |
| 10–19 | 10.0% |
| 20–24 | 1.9% |
| 25–34 | 14.7% |
| 35–44 | 10.8% |
| 45–54 | 14.8% |
| 55–64 | 10.9% |
| 65–74 | 13.4% |
| 75+ | 9.5% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 45.2% |
| Owned outright | 27.1% |
| Rented | 12.3% |
| Vacant | 15.3% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 85.6% |
| Townhome | 0.0% |
| 2–4 units | 2.8% |
| 5–19 units | 1.8% |
| 20+ units | 0.0% |
| Mobile / other | 9.7% |
Businesses in 04862
107 business establishments with 561 employees (ZIP Codes Business Patterns 2023).
- Construction: 18
- Retail Trade: 15
- Professional, Scientific, and Technical Services: 10
- Other Services (except Public Administration): 10
- Administrative and Support and Waste Management and Remediation Services: 9
- Transportation and Warehousing: 8
- Arts, Entertainment, and Recreation: 6
- Accommodation and Food Services: 6
EDDM carrier routes
04862 has 3 USPS carrier routes with 1,425 residential and 21 business mailboxes. Open the EDDM route map.
Carrier routes in 04862
04862 has 3 USPS carrier routes (3 rural (R)) with 1,425 residential and 21 business mailboxes. Routes range from 466 homes (R002) to 481 homes (R003); the median route has 478 homes. The Census counted 1,725 households in 04862 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 3 |
| 500–749 | 0 |
| 750–999 | 0 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 04862 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route R003 — USPS business mailboxes 14, 481 homes
- Route R001 — USPS business mailboxes 4, 478 homes
- Route R002 — USPS business mailboxes 3, 466 homes
Select these 3 routes on the route map
Every carrier route in 04862
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| R001 | Rural | 478 | 4 | $76,930 | — | — | — |
| R002 | Rural | 466 | 3 | $70,644 | — | — | — |
| R003 | Rural | 481 | 14 | $76,930 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 04862 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
- 04847 (4.7 mi)
- 04574 (5.6 mi)
- 04949 (7.9 mi)
- 04973 (8.6 mi)
- 04864 (9.5 mi)
- 04856 (9.6 mi)
- 04843 — Camden CDP, ME (10.7 mi)
- 04572 — Waldoboro CDP, ME (11 mi)
Areas that include 04862
- Union, ME ZIP codes — 1 ZIP code
- Knox County ZIP codes — 19 ZIP codes
- Maine ZIP code data
Where it ranks
- No. 4 of 14: highest share of households with children in Knox County
- No. 2 of 14: lowest median age in Knox County
Mail every home in 04862
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) 04862, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 04862 in?
- 04862 is a Union, ME mailing address. None of its land lies inside a Census-defined city or community.
- What county is 04862 in?
- 04862 is in Knox County.
- What is the population of 04862?
- About 4,023 people (±421), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 3,794.
- What is the median household income in 04862?
- $73,536 (±$13,081), compared with $74,733 for Maine as a whole. Half the households in the ZIP code earn more and half earn less.
- How many carrier routes and mailboxes are in 04862?
- 3 USPS carrier routes with 1,425 residential and 21 business mailboxes (1,445 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 04862?
- The closest, measured center to center: 04847 (4.7 mi), 04574 (5.6 mi), 04949 (7.9 mi), 04973 (8.6 mi), 04864 (9.5 mi) and 04856 (9.6 mi).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.