Photo: Quintin Soloviev · CC BY 4.0Living in Wilmington, DE: what to set up and who to call
Most mail in Wilmington goes to 19802 (33% of residents), one of 4 ZIP codes in town. Wilmington has its own train station.
I’m new in town
What to set up in Wilmington, and who provides it. Tap an answer for the details and where they come from.
Power, water and internet
Who to call to start service at a new address in Wilmington.
Power comes from Delmarva Power
Delmarva Power (Delmarva Power), an investor-owned utility, serves all of Wilmington. Its homes paid an average of 18.2¢ per kWh in 2025, about $162 a month (its average across Delaware, for customers on its standard service). Delaware lets you buy power from another supplier; 9% of Delmarva Power’s home customers do, and Delmarva Power still delivers it.
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Wilmington Water Department
Wilmington Water Department supplies almost all of Wilmington. It draws surface water (EPA lists Artesian Water Company as seller) and serves 107,976 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 86% of the 332 systems serving 100,001–250,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2021–Dec 2023, was 0.0 ppb, below the 15 ppb action level that applied. Results below detection are reported as 0, so 0 doesn’t mean no lead at any tap.
The system’s full record: EPA ECHO report
EPA SDWIS via Envirofacts (violations pulled Oct 9, 2026) and ECHO (lead samples, 2026Q3); service area: EPA Community Water System Service Area Boundaries v3.0. Violations are counted by the start of their compliance period. DE0000663.
4 home internet providers serve Wilmington
100% of 23,017 addresses can get 100/20 Mbps; 65% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Xfinity | Cable | 100% | 2,000/250 |
| Verizon | Fiber, Fixed wireless | 94% | 980/880 |
| T-Mobile | Fixed wireless | 50% | 100/20 |
| AT&T | Fixed wireless | 48% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Wilmington’s trash rules yet
Pickup rules, the dump and recycling in Wilmington.
Where your child goes to school
Public school districts and the school path by grade.
Most of Wilmington (33%) is in Colonial School District; parts are in Red Clay Consolidated School District (30%) and Christina School District (25%) and Brandywine School District (11%).
C+School gradeSee Schools →U.S. Department of Education, NCES Common Core of Data, 2024–25. Enrollment rules and registration are the district’s.
Town hall and registering to vote
Who to call, and how to register.
Election office: FVAP local election office directory, updated Sep 2019; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Wilmington spans 4 ZIP codes
ZIP codes where Wilmington residents live, with the share of the town in each.
| ZIP | Post office name | Share of Wilmington | ZIP’s residents in Wilmington |
|---|---|---|---|
| 19802 | Wilmington, DE | 33% | 89% |
| 19805 | Wilmington, DE | 32% | 56% |
| 19801 | Wilmington, DE | 21% | 94% |
| 19806 | Wilmington, DE | 14% | 97% |
A few homes fall in 19807. 19850, 19880, 19884, 19885, 19886, 19890, 19891, 19892, 19893, 19894, 19895, 19896, 19897, 19898, 19899 are P.O. box or single-organization ZIPs with no homes.
Census 2020 ZIP Code Tabulation Areas, by census block; post office names: GeoNames (CC BY 4.0). ZIPs created since 2020 are missing.
Getting around, the ER and the library
One line each; the subject pages have the rest.
Train: OpenStreetMap (© OpenStreetMap contributors). ER: CMS hospital data. Library: IMLS Public Libraries Survey, FY2024.
Questions about living in Wilmington
Who supplies Wilmington’s drinking water, and has it had violations?
Wilmington Water Department (EPA ID DE0000663). It reported no health-based violations to EPA in the five years to October 2026; 86% of systems its size had none. Its latest lead 90th percentile was 0.0 ppb (Jan 2021–Dec 2023), against a 15 ppb action level.
Who provides electricity in Wilmington?
Delmarva Power (Delmarva Power), an investor-owned utility. Its homes paid about 18.2¢ per kWh in 2025 (EIA).
What internet providers serve Wilmington?
Xfinity, Verizon, T-Mobile, AT&T (FCC, as of December 2025).
What ZIP codes are in Wilmington?
19802 (33%), 19805 (32%), 19801 (21%), 19806 (14%), by share of residents. Census 2020 ZIP Code Tabulation Areas.
What school district is Wilmington in?
Colonial School District. Parts of the city are in Red Clay Consolidated School District and Christina School District and Brandywine School District.
How do I register to vote in Wilmington?
In Delaware you can register online until 24 days before Election Day, in person until 24 days before Election Day, or by mail (postmarked 24 days before). Elections here are run by the Department of Elections - New Castle County Office. Check your registration at ivote.de.gov.
Sources & dates
Every answer above names its source. Here they are with their dates.
- Water: EPA SDWIS (Envirofacts, pulled Oct 9, 2026), ECHO SDWA 2026Q3, EPA CWS Service Area Boundaries v3.0.
- Power: HIFLD Electric Retail Service Territories (map Aug 2023); EIA-861 final 2025.
- Trash: OpenStreetMap, Geofabrik extract of Oct 9, 2026. © OpenStreetMap contributors (ODbL).
- ZIP codes: Census 2020 ZCTA relationship files; GeoNames postal codes (CC BY 4.0).
- Schools: NCES Common Core of Data, 2024–25.
- Registration: vote.gov, updated Nov 18, 2024 (read Oct 10, 2026). Official sites and area codes: Wikidata.
- Election office: FVAP local election office directory (fetched Oct 10, 2026; each record dated), EAC EAVS 2024 jurisdictions; registration and lookup links from vote.gov’s state data, checked Oct 10, 2026.
- Internet: FCC National Broadband Map, as of December 2025.