17866 ZIP Code, Coal Township, PA
17866 is a ZIP code in Coal Township, Pennsylvania in Northumberland County. It covers 24 square miles of land. The closest ZIP codes are 17836, 17860 and 17881. 9,769 people live here in 3,575 households. With about 401 people per square mile it is lightly settled, and most homes are owner-occupied (80%). Median household income is $51,010, well below the Pennsylvania median of $77,971.
Quick facts
- Mailing city: Coal Township, PA
- County: Northumberland County
- Land area: 24 sq mi
- Population: 9,769
- Median household income: $51,010
- Carrier routes: 9 (3,614 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 9,769 |
| Households | 3,575 |
| Median household income | $51,010 |
| Income per person | $25,108 |
| Median age | 44.4 |
| Homeowners | 79.8% |
| Median home value | $88,300 |
| Median rent | $745 |
| Bachelor's degree or higher | 9.0% |
| Average commute (minutes) | 26.7 |
| Households with kids under 18 | 16.7% |
| Moved in the past year | 12.2% |
| Below the poverty line | 14.1% |
| Broadband internet | 86.6% |
| Speak a non-English language at home | 4.8% |
Household income
| % of households | Value |
|---|---|
| <$10K | 5.5% |
| $10–15K | 8.3% |
| $15–25K | 11.1% |
| $25–35K | 11.6% |
| $35–50K | 11.0% |
| $50–75K | 26.6% |
| $75–100K | 9.6% |
| $100–150K | 11.2% |
| $150–200K | 4.0% |
| $200K+ | 1.1% |
Age
| % of all residents | Value |
|---|---|
| <10 | 5.8% |
| 10–19 | 6.4% |
| 20–24 | 4.8% |
| 25–34 | 14.9% |
| 35–44 | 19.4% |
| 45–54 | 12.2% |
| 55–64 | 16.6% |
| 65–74 | 11.8% |
| 75+ | 8.0% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 34.7% |
| Owned outright | 36.2% |
| Rented | 17.6% |
| Vacant | 11.5% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 63.8% |
| Townhome | 25.9% |
| 2–4 units | 2.5% |
| 5–19 units | 1.2% |
| 20+ units | 5.0% |
| Mobile / other | 1.5% |
Businesses in 17866
113 business establishments with 2,084 employees (ZIP Codes Business Patterns 2023).
- Retail Trade: 21
- Health Care and Social Assistance: 20
- Other Services (except Public Administration): 16
- Accommodation and Food Services: 14
- Administrative and Support and Waste Management and Remediation Services: 9
- Construction: 8
- Manufacturing: 6
- Professional, Scientific, and Technical Services: 6
EDDM carrier routes
17866 has 9 USPS carrier routes with 3,614 residential and 149 business mailboxes. Open the EDDM route map.
Carrier routes in 17866
17866 has 9 USPS carrier routes (6 city (C), 3 rural (R)) with 3,614 residential and 149 business mailboxes. Routes range from 24 homes (R002) to 718 homes (C011); the median route has 531 homes. The Census counted 3,575 households in 17866 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 3 |
| 250–499 | 1 |
| 500–749 | 5 |
| 750–999 | 0 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 17866 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C008 — USPS business mailboxes 56, 108 homes
- Route C011 — USPS business mailboxes 29, 718 homes
- Route C009 — USPS business mailboxes 20, 589 homes
- Route C016 — USPS business mailboxes 14, 630 homes
- Route R003 — USPS business mailboxes 13, 251 homes
Select these 5 routes on the route map
Every carrier route in 17866
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C008 | City | 108 | 56 | $31,903 | — | — | — |
| C009 | City | 589 | 20 | $54,702 | — | — | — |
| C011 | City | 718 | 29 | $45,856 | — | — | — |
| C013 | City | 571 | 6 | $52,219 | — | — | — |
| C015 | City | 531 | 4 | $54,702 | — | — | — |
| C016 | City | 630 | 14 | $40,711 | — | — | — |
| R001 | Rural | 192 | 3 | $75,444 | — | — | — |
| R002 | Rural | 24 | 4 | $52,219 | — | — | — |
| R003 | Rural | 251 | 13 | $75,444 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 17866 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
- 17836 (4 mi)
- 17860 (4.7 mi)
- 17881 — Trevorton CDP, PA (4.8 mi)
- 17872 — Trevorton CDP, PA (4.9 mi)
- 17941 — Klingerstown CDP, PA (5.9 mi)
- 17867 (6.3 mi)
- 17964 (6.4 mi)
- 17834 — Kulpmont borough, PA (6.8 mi)
Areas that include 17866
- Edgewood (Northumberland County), PA ZIP codes — 1 ZIP code
- Fairview-Ferndale, PA ZIP codes — 1 ZIP code
- Marshallton, PA ZIP codes — 1 ZIP code
- Ranshaw, PA ZIP codes — 1 ZIP code
- Tharptown (Uniontown), PA ZIP codes — 1 ZIP code
- Coal Township, PA ZIP codes — 1 ZIP code
- Northumberland County ZIP codes — 28 ZIP codes
- Pennsylvania ZIP code data
Where it ranks
Mail every home in 17866
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) 17866, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 17866 in?
- 17866 is a Coal Township, PA mailing address. By land area, 4% lies inside Fairview-Ferndale, 4% lies inside Marshallton and 2% lies inside Edgewood; the rest is outside any Census-defined city or community.
- What county is 17866 in?
- 17866 is in Northumberland County.
- What is the population of 17866?
- About 9,769 people (±19), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 10,105.
- What is the median household income in 17866?
- $51,010 (±$2,494), compared with $77,971 for Pennsylvania as a whole. Half the households in the ZIP code earn more and half earn less.
- How many carrier routes and mailboxes are in 17866?
- 9 USPS carrier routes with 3,614 residential and 149 business mailboxes (3,763 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 17866?
- The closest, measured center to center: 17836 (4 mi), 17860 (4.7 mi), 17881 (4.8 mi, Trevorton), 17872 (4.9 mi, Trevorton), 17941 (5.9 mi, Klingerstown) and 17867 (6.3 mi).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.