17551 ZIP Code, Millersville, PA
17551 is a ZIP code in Millersville, Pennsylvania in Lancaster County. It covers 11 square miles of land. The closest ZIP codes are 17516, 17504 and 17603. 11,753 people live here in 3,608 households. At about 1,108 people per square mile it has suburban density, and owners and renters are mixed (58% own). Median household income is $68,661, below the Pennsylvania median of $77,971; the median age is 23.1, younger than most ZIP codes.
Quick facts
- Mailing city: Millersville, PA
- County: Lancaster County
- Land area: 11 sq mi
- Population: 11,753
- Median household income: $68,661
- Carrier routes: 7 (3,859 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 11,753 |
| Households | 3,608 |
| Median household income | $68,661 |
| Income per person | $28,863 |
| Median age | 23.1 |
| Homeowners | 57.8% |
| Median home value | $287,900 |
| Median rent | $1,485 |
| Bachelor's degree or higher | 43.5% |
| Average commute (minutes) | 21.7 |
| Households with kids under 18 | 24.1% |
| Moved in the past year | 25.6% |
| Below the poverty line | 21.7% |
| Broadband internet | 91.9% |
| Speak a non-English language at home | 13.3% |
Household income
| % of households | Value |
|---|---|
| <$10K | 3.7% |
| $10–15K | 8.8% |
| $15–25K | 5.7% |
| $25–35K | 6.1% |
| $35–50K | 12.3% |
| $50–75K | 18.0% |
| $75–100K | 14.1% |
| $100–150K | 15.4% |
| $150–200K | 8.5% |
| $200K+ | 7.3% |
Age
| % of all residents | Value |
|---|---|
| <10 | 5.2% |
| 10–19 | 25.1% |
| 20–24 | 22.2% |
| 25–34 | 7.3% |
| 35–44 | 8.3% |
| 45–54 | 8.7% |
| 55–64 | 7.9% |
| 65–74 | 7.9% |
| 75+ | 7.4% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 32.8% |
| Owned outright | 23.9% |
| Rented | 40.2% |
| Vacant | 3.1% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 40.9% |
| Townhome | 33.8% |
| 2–4 units | 13.9% |
| 5–19 units | 4.8% |
| 20+ units | 6.4% |
| Mobile / other | 0.3% |
Businesses in 17551
116 business establishments with 916 employees (ZIP Codes Business Patterns 2023).
- Other Services (except Public Administration): 28
- Health Care and Social Assistance: 14
- Accommodation and Food Services: 13
- Retail Trade: 12
- Administrative and Support and Waste Management and Remediation Services: 10
- Construction: 9
- Professional, Scientific, and Technical Services: 9
- Real Estate and Rental and Leasing: 7
EDDM carrier routes
17551 has 7 USPS carrier routes with 3,859 residential and 108 business mailboxes. Open the EDDM route map.
Carrier routes in 17551
17551 has 7 USPS carrier routes (5 city (C), 2 rural (R)) with 3,859 residential and 108 business mailboxes. Routes range from 357 homes (C001) to 651 homes (C004); the median route has 572 homes. The Census counted 3,608 households in 17551 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 2 |
| 500–749 | 5 |
| 750–999 | 0 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 17551 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C002 — USPS business mailboxes 48, 637 homes
- Route C001 — USPS business mailboxes 30, 357 homes
- Route C003 — USPS business mailboxes 15, 561 homes
- Route R001 — USPS business mailboxes 10, 572 homes
- Route C004 — USPS business mailboxes 3, 651 homes
Select these 5 routes on the route map
Every carrier route in 17551
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C001 | City | 357 | 30 | $109,072 | — | — | — |
| C002 | City | 637 | 48 | $86,172 | — | — | — |
| C003 | City | 561 | 15 | $109,072 | — | — | — |
| C004 | City | 651 | 3 | $63,193 | — | — | — |
| C005 | City | 462 | 0 | $63,135 | — | — | — |
| R001 | Rural | 572 | 10 | $59,830 | — | — | — |
| R002 | Rural | 619 | 2 | $59,830 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 17551 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
- 17516 — Conestoga CDP, PA (3.6 mi)
- 17504 (4 mi)
- 17603 — Lancaster city, PA (4.3 mi)
- 17582 — Washington Boro CDP, PA (4.4 mi)
- 17554 — Mountville borough, PA (5.1 mi)
- 17584 — Willow Street CDP, PA (5.9 mi)
- 17565 — Conestoga CDP, PA (6.4 mi)
- 17601 — Lancaster city, PA (7.2 mi)
Areas that include 17551
- Millersville, PA ZIP codes — 2 ZIP codes
- Lancaster County ZIP codes — 56 ZIP codes
- Pennsylvania ZIP code data
Where it ranks
- No. 1 of 45: highest share of residents who moved in during the past year in Lancaster County
- No. 3 of 45: lowest median age in Lancaster County
Mail every home in 17551
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) 17551, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 17551 in?
- 17551 is a Millersville, PA mailing address. By land area, 16% lies inside Millersville; the rest is outside any Census-defined city or community.
- What county is 17551 in?
- 17551 is in Lancaster County.
- What is the population of 17551?
- About 11,753 people (±775), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 11,056.
- What is the median household income in 17551?
- $68,661 (±$9,473), 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 17551?
- 7 USPS carrier routes with 3,859 residential and 108 business mailboxes (3,967 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 17551?
- The closest, measured center to center: 17516 (3.6 mi, Conestoga), 17504 (4 mi), 17603 (4.3 mi, Lancaster), 17582 (4.4 mi, Washington Boro), 17554 (5.1 mi, Mountville borough, PA) and 17584 (5.9 mi, Willow Street).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.