03584 ZIP Code, Lancaster, NH
03584 is a ZIP code in Lancaster, New Hampshire in Coos County. It covers 62 square miles of land. The closest ZIP codes are 03582, 03583 and 05906. 3,501 people live here in 1,592 households. It is rural, with fewer than 100 people per square mile, and most homes are owner-occupied (76%). Median household income is $66,768, below the New Hampshire median of $99,031; the median age is 47.6, older than most ZIP codes.
Quick facts
- Mailing city: Lancaster, NH
- County: Coos County
- Land area: 62 sq mi
- Population: 3,501
- Median household income: $66,768
- Carrier routes: 4 (1,677 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 3,501 |
| Households | 1,592 |
| Median household income | $66,768 |
| Income per person | $60,672 |
| Median age | 47.6 |
| Homeowners | 75.8% |
| Median home value | $209,500 |
| Median rent | $1,028 |
| Bachelor's degree or higher | 29.5% |
| Average commute (minutes) | 22.3 |
| Households with kids under 18 | 21.4% |
| Moved in the past year | 6.3% |
| Below the poverty line | 17.9% |
| Broadband internet | 88.9% |
| Speak a non-English language at home | 2.8% |
Household income
| % of households | Value |
|---|---|
| <$10K | 6.2% |
| $10–15K | 5.7% |
| $15–25K | 9.4% |
| $25–35K | 3.6% |
| $35–50K | 8.9% |
| $50–75K | 20.6% |
| $75–100K | 9.9% |
| $100–150K | 17.2% |
| $150–200K | 12.6% |
| $200K+ | 6.0% |
Age
| % of all residents | Value |
|---|---|
| <10 | 10.8% |
| 10–19 | 9.5% |
| 20–24 | 4.0% |
| 25–34 | 12.7% |
| 35–44 | 11.0% |
| 45–54 | 8.1% |
| 55–64 | 15.7% |
| 65–74 | 15.0% |
| 75+ | 13.2% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 26.6% |
| Owned outright | 41.0% |
| Rented | 21.4% |
| Vacant | 11.1% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 69.6% |
| Townhome | 1.5% |
| 2–4 units | 15.1% |
| 5–19 units | 3.7% |
| 20+ units | 2.8% |
| Mobile / other | 7.5% |
Businesses in 03584
141 business establishments with 1,383 employees (ZIP Codes Business Patterns 2023).
- Retail Trade: 30
- Health Care and Social Assistance: 17
- Accommodation and Food Services: 13
- Construction: 10
- Wholesale Trade: 9
- Other Services (except Public Administration): 9
- Information: 8
- Finance and Insurance: 8
EDDM carrier routes
03584 has 4 USPS carrier routes with 1,677 residential and 173 business mailboxes. Open the EDDM route map.
Carrier routes in 03584
03584 has 4 USPS carrier routes (2 city (C), 2 rural (R)) with 1,677 residential and 173 business mailboxes. Routes range from 408 homes (R002) to 428 homes (C001); the median route has 421 homes. The Census counted 1,592 households in 03584 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 4 |
| 500–749 | 0 |
| 750–999 | 0 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 03584 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C001 — USPS business mailboxes 111, 428 homes
- Route R003 — USPS business mailboxes 40, 422 homes
- Route R002 — USPS business mailboxes 15, 408 homes
- Route C002 — USPS business mailboxes 7, 419 homes
Select these 4 routes on the route map
Every carrier route in 03584
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C001 | City | 428 | 111 | $86,754 | — | — | — |
| C002 | City | 419 | 7 | $86,754 | — | — | — |
| R002 | Rural | 408 | 15 | $62,127 | — | — | — |
| R003 | Rural | 422 | 40 | $86,754 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 03584 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
- 03582 — Groveton CDP, NH (7.3 mi)
- 03583 (7.5 mi)
- 05906 — Lunenburg CDP, VT (8.5 mi)
- 03598 — Whitefield CDP, NH (8.7 mi)
- 05904 — Gilman CDP, VT (9.4 mi)
- 05840 (12.4 mi)
- 05858 (12.9 mi)
- 03595 (13 mi)
Areas that include 03584
- Lancaster, NH ZIP codes — 1 ZIP code
- Coos County ZIP codes — 15 ZIP codes
- New Hampshire ZIP code data
Where it ranks
- No. 4 of 10: highest median household income in Coos County
- No. 4 of 10: highest share of households with children in Coos County
- No. 4 of 10: lowest median age in Coos County
Mail every home in 03584
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) 03584, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 03584 in?
- 03584 is a Lancaster, NH mailing address. By land area, 5% lies inside Lancaster; the rest is outside any Census-defined city or community.
- What county is 03584 in?
- 03584 is in Coos County.
- What is the population of 03584?
- About 3,501 people (±118), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 3,490.
- What is the median household income in 03584?
- $66,768 (±$17,241), compared with $99,031 for New Hampshire as a whole. Half the households in the ZIP code earn more and half earn less.
- How many carrier routes and mailboxes are in 03584?
- 4 USPS carrier routes with 1,677 residential and 173 business mailboxes (1,848 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 03584?
- The closest, measured center to center: 03582 (7.3 mi, Groveton), 03583 (7.5 mi), 05906 (8.5 mi, Lunenburg), 03598 (8.7 mi, Whitefield), 05904 (9.4 mi, Gilman) and 05840 (12.4 mi).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.