Berkley Crossroads Historic District · Photo: Jerrye & Roy Klotz, MD · CC BY-SA 3.0Living in Darlington, MD: what to set up and who to call
Darlington has no town government of its own, so Harford County runs its elections and most services, and its children attend Harford County Public Schools. Tap water in most of Darlington comes from the Town of Darlington water system, which has a clean five-year EPA record (about 23% of systems its size had a health-based violation) and a latest lead result below detection.
I’m new in town
What to set up in Darlington, 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 Darlington.
Power comes from Delmarva Power
Delmarva Power (Delmarva Power), an investor-owned utility, serves all of Darlington. Its homes paid an average of 21.8¢ per kWh in 2025, about $214 a month (its average across Maryland, for customers on its standard service). Maryland lets you buy power from another supplier; 3% 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 Town of Darlington water system
The Town of Darlington water system supplies Darlington: about 87% of residents live in its service area. About 13% of homes are outside any mapped community water system, most likely on private wells, which EPA doesn’t regulate. It draws ground water and serves 250 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 77% of the 15,074 systems serving 101–500 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2024–Dec 2026, was 0.0 ppb, below the 15 ppb action level that applied. The highest in five years was 1.4 ppb. 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. MD0120009.
3 home internet providers serve Darlington
100% of 192 addresses can get 100/20 Mbps; 4% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Armstrong | Cable, Fiber | 99% | 1,000/20 |
| T-Mobile | Fixed wireless | 72% | 100/20 |
| AT&T | Fixed wireless | 28% | 25/3 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Darlington’s trash rules yet
Pickup rules, the dump and recycling in Darlington.
Where your child goes to school
Public school districts and the school path by grade.
Darlington is in Harford County Public Schools.
Test scores and every school: see Schools →U.S. Department of Education, NCES Common Core of Data, 2024–25. Enrollment rules and registration are the district’s.
No town hall: the county runs things
Darlington is unincorporated, so Harford County is the local government.
Election office: FVAP local election office directory, updated Mar 2018; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Mar 11, 2026.
Darlington is in ZIP code 21034
ZIP codes where Darlington residents live, with the share of the town in each.
| ZIP | Post office name | Share of Darlington | ZIP’s residents in Darlington |
|---|---|---|---|
| 21034 | Darlington, MD | 100% | 12% |
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.
ER: CMS hospital data. Library: IMLS Public Libraries Survey, FY2024.
Questions about living in Darlington
Who supplies Darlington’s drinking water, and has it had violations?
The Town of Darlington water system (EPA ID MD0120009). It reported no health-based violations to EPA in the five years to October 2026; 77% of systems its size had none. Its latest lead 90th percentile was 0.0 ppb (Jan 2024–Dec 2026), against a 15 ppb action level.
Who provides electricity in Darlington?
Delmarva Power (Delmarva Power), an investor-owned utility. Its homes paid about 21.8¢ per kWh in 2025 (EIA).
What internet providers serve Darlington?
Armstrong, T-Mobile, AT&T (FCC, as of December 2025).
What ZIP codes are in Darlington?
21034. Census 2020 ZIP Code Tabulation Areas.
What school district is Darlington in?
Harford County Public Schools.
How do I register to vote in Darlington?
In Maryland you can register online until 21 days before Election Day, in person up to and including Election Day, or by mail (postmarked 21 days before). Elections here are run by the Harford County Board of Elections. Check your registration at voterservices.elections.maryland.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 Mar 11, 2026 (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.