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Memory LaneMemory Lane · Photo: Acroterion · CC BY-SA 4.0
The Williston handbook

Living in Williston, MD: what to set up and who to call

Williston has no town government of its own, so Caroline County runs its elections and most services, and its children attend Caroline County Public Schools. Most of Williston has one wired internet choice: Xfinity.

Which school will my kid attend?How do I register to vote?ZIP codes
Williston has no town government. It’s a census-designated place in Caroline County, so the county and regional agencies provide most services. This page answers what we can; the same answers appear on Williston’s town page under “Getting set up”.

I’m new in town

What to set up in Williston, and who provides it. Tap an answer for the details and where they come from.

PowerDelmarva Powerinvestor-owned utility · 21.8¢/kWhMore →Internet2 providers100% of addresses get 100/20 MbpsMore →Trash & dumpNot on file yetWe don’t have Williston’s trash rules yetMore →SchoolCaroline County Public SchoolsWhich school depends on grade and addressMore →Register to voteOnlineRules from vote.govMore →ZIP code21629Where people live, not P.O. boxesMore →
Home services

Power, water and internet

Who to call to start service at a new address in Williston.

Electricity

Power comes from Delmarva Power

Delmarva Power (Delmarva Power), an investor-owned utility, serves all of Williston. 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.

Internet

2 home internet providers serve Williston

100% of 69 addresses can get 100/20 Mbps; 0% can get fiber.

ProviderTechnologyAddressesFastest (Mbps)
XfinityCable100%2,000/250
AT&TFixed wireless4%25/3

FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.

Trash & recycling

We don’t have Williston’s trash rules yet

Pickup rules, the dump and recycling in Williston.

Trash, recycling and bulk pickupNot on fileWilliston has no town government of its own, so look for trash and recycling rules on the county’s site.
Schools

Where your child goes to school

Public school districts and the school path by grade.

Williston kids go to
PK–55 elementary schoolsDepends on your address
6–82 middle schoolsDepends on your address
9–122 high schoolsDepends on your address

Williston is in Caroline 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.

Government & voting

No town hall: the county runs things

Williston is unincorporated, so Caroline County is the local government.

Local governmentCaroline CountyWilliston is a census-designated place: no town hall of its ownCensus
Who runs elections hereCaroline County Board of ElectionsElections here are run by Caroline County (county election office). 403 S. Seventh Street, Suite 247, Denton, MD 21629-1335 · (410) 479-8145 · [email protected]FVAP, Aug 2025
Register to voteOnlineIn 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).vote.govCheck your registration and polling placevoterservices.elections.maryland.govThe state’s voter lookup

Election office: FVAP local election office directory, updated Aug 2025; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Mar 11, 2026.

ZIP codes & area codes

Williston is in ZIP code 21629

ZIP codes where Williston residents live, with the share of the town in each.

ZIPPost office nameShare of WillistonZIP’s residents in Williston
21629Denton, MD100%2%

Census 2020 ZIP Code Tabulation Areas, by census block; post office names: GeoNames (CC BY 4.0). ZIPs created since 2020 are missing.

Everyday places

Getting around, the ER and the library

One line each; the subject pages have the rest.

Nearest emergency roomUniversity of MD Shore Medical Center at Easton12.8 miles awayGet a library cardCaroline Central Library100 Market St. · (410) 479-1343

ER: CMS hospital data. Library: IMLS Public Libraries Survey, FY2024.

Questions about living in Williston

Who provides electricity in Williston?

Delmarva Power (Delmarva Power), an investor-owned utility. Its homes paid about 21.8¢ per kWh in 2025 (EIA).

What internet providers serve Williston?

Xfinity, AT&T (FCC, as of December 2025).

What ZIP codes are in Williston?

21629. Census 2020 ZIP Code Tabulation Areas.

What school district is Williston in?

Caroline County Public Schools.

How do I register to vote in Williston?

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 Caroline 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.

  • 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.