Photo: Jarek Tuszyński · CC BY-SA 3.0Living in Mason Neck, VA: what to set up and who to call
Mason Neck has no town government of its own, so Fairfax County runs its elections and most services, and its children attend Fairfax County Public Schools. Lorton Community Library (Fairfax County Public Library), 4.0 miles away, is the closest library to Mason Neck.
I’m new in town
What to set up in Mason Neck, 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 Mason Neck.
Power comes from Dominion Energy
Dominion Energy (Virginia Electric & Power Co.), an investor-owned utility, serves all of Mason Neck. Its homes paid an average of 15.2¢ per kWh in 2025, about $158 a month (its average across Virginia).
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Fairfax Water
Fairfax Water supplies almost all of Mason Neck. It draws surface water (EPA lists Washington Aqueduct Division. as seller) and serves 1,121,613 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 82% of the 27 systems serving more than 1,000,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2021–Dec 2023, was 1.2 ppb, below the 15 ppb action level that applied. That’s lower than 68% of similar systems’ latest results.
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. VA6059501.
4 home internet providers serve Mason Neck
96% of 847 addresses can get 100/20 Mbps; 90% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| Verizon | Fiber, Fixed wireless | 90% | 2,300/2,300 |
| Cox Communications | Cable | 86% | 2,000/35 |
| T-Mobile | Fixed wireless | 22% | 25/3 |
| AT&T | Fixed wireless | 11% | 25/3 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
We don’t have Mason Neck’s trash rules yet
Pickup rules, the dump and recycling in Mason Neck.
Where your child goes to school
Public school districts and the school path by grade.
Mason Neck is in Fairfax County Public Schools.
B+School gradeSee 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
Mason Neck is unincorporated, so Fairfax County is the local government.
Election office: FVAP local election office directory, updated Jun 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Sep 30, 2026.
Mason Neck is in ZIP code 22079
ZIP codes where Mason Neck residents live, with the share of the town in each.
| ZIP | Post office name | Share of Mason Neck | ZIP’s residents in Mason Neck |
|---|---|---|---|
| 22079 | Lorton, VA | 100% | 6% |
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 Mason Neck
Who supplies Mason Neck’s drinking water, and has it had violations?
Fairfax Water (EPA ID VA6059501). It reported no health-based violations to EPA in the five years to October 2026; 82% of systems its size had none. Its latest lead 90th percentile was 1.2 ppb (Jan 2021–Dec 2023), against a 15 ppb action level.
Who provides electricity in Mason Neck?
Dominion Energy (Virginia Electric & Power Co.), an investor-owned utility. Its homes paid about 15.2¢ per kWh in 2025 (EIA).
What internet providers serve Mason Neck?
Verizon, Cox Communications, T-Mobile, AT&T (FCC, as of December 2025).
What ZIP codes are in Mason Neck?
22079. Census 2020 ZIP Code Tabulation Areas.
What school district is Mason Neck in?
Fairfax County Public Schools.
How do I register to vote in Mason Neck?
In Virginia you can register online until 11 days before Election Day, in person up to and including Election Day, or by mail (postmarked 11 days before). Elections here are run by the Fairfax General Registrar. Check your registration at vote.elections.virginia.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 Sep 30, 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.