Plainfield School District
Connecticut · runs pre-K through grade 12
NCES ID 0903270 · plainfieldschools.org · (860) 564-6403
Plainfield is the only school district serving 3 of the 5 ZIP Code areas it touches, and shares the other 2 with neighbors. It covers 6,264 homes and 14,973 residents. By homes covered it ranks 83rd of the 165 districts in Connecticut.
Where this district is the answer, and where it is not
The counts below come from the census blocks assigned to Plainfield, grouped by the ZIP Code area each block falls in. The Census Bureau publishes the blocks; the grouping is computed here, and it is the only place these particular numbers exist.
- Homes inside the boundary6,264
- Residents14,973
- ZIP Code areas it reaches5
- Where it is the only district3
- Where it shares with another district2
- Where it holds under half a percent0
- Land area42 square miles
- Homes per square mile148
The ZIP Code areas it reaches
The spread is the thing to notice. In 06374 this district holds 100% of the homes; in 06239 it holds 6.2% of the homes. Same district, opposite answers, and a lookup that names it without the share tells the second household the same thing as the first.
- ZIP Code 06374 · Plainfield Village, Connecticut100% of the homes
- ZIP Code 06332 · Plainfield, Connecticut100% of the homes
- ZIP Code 06387 · Wauregan, Connecticut100% of the homes
- ZIP Code 06354 · Moosup, Connecticut92% of the homes
- ZIP Code 06239 · Danielson, Connecticut6.2% of the homes
What one name misses where high school is arranged elsewhere
Plainfield is the largest district in 4 ZIP Code areas. Answer with its name alone and the answer misses 202 of the 6,156 homes those areas hold — though in 3 of them it holds every home there is. The count is homes, not addresses, and it is the number no lookup prints.
ZIP Code 06354 · Moosup, Connecticut is a two-district area: 2,194 of its 2,396 homes are inside Plainfield, and the other 202 homes are with Sterling. Which one an address belongs to is settled by the street, not by the five digits.
In ZIP Code 06332 · Plainfield, Connecticut the single-name answer is the true one: Plainfield holds all 268 homes counted there, and no other district holds a share worth naming.
ZIP Code 06374 · Plainfield Village, Connecticut is another area where one name covers everything — 3,356 homes, all of them inside Plainfield.
Plainfield is not the name anyone would give for ZIP Code 06239 · Danielson, Connecticut — Killingly leads it — and Plainfield holds 310 homes there all the same. Answer that area with one name and that is what it is wrong about.
Who takes the other homes in its ZIP Codes
Plainfield runs pre-K through grade 12 itself, so an address it holds sees no change of authority between grade school and high school. The districts listed below are the ones that take the other homes in the ZIP Code areas it shares — Killingly and Sterling. They are neighbors on the same postal ground, not the next stop for its own students.
- Killingly School District4,654 homes in 1 shared ZIP Code area
- Sterling School District202 homes in 1 shared ZIP Code area
Who it shares ZIP Codes with
Plainfield appears alongside a mix of district kinds — Killingly and Sterling. A unified district runs every grade itself, so an address inside it belongs to no elementary or secondary district.
- Killingly School District1 shared ZIP area
- Sterling School District1 shared ZIP area
Plainfield and Killingly school district boundary: the ZIP Codes they share
- ZIP Code 06239 · Danielson, Connecticut
Plainfield and Sterling school district boundary: the ZIP Codes they share
- ZIP Code 06354 · Moosup, Connecticut
Have a street address?
A ZIP Code names every district that can serve the area; a street address settles which one serves a home. The Census Bureau geocoder takes an exact address and returns its school districts from the current boundary files, free and with no account.
Where this district sits
What to do next
Ask the district office to confirm your street address: look on its site for a school locator, a find my school tool or an attendance zone map, or call the office.
A ZIP Code is a set of mail delivery routes, not a boundary: in 2 of the 5 ZIP Code areas Plainfield reaches, at least one other district holds a real share of the homes as well, and the line between them runs along streets. Only the district can say which side of that line an address is on.
District websites and phone numbers here come from the NCES Common Core of Data directory, 2024-25 school year, filed under the same district ID as the Census boundary files. Where it lists no usable website, none is printed rather than guessed.
If a house purchase depends on the answer, ask the district itself for written confirmation of that exact address. A listing is not a district record, and neither is this page.
Where these numbers come from
The homes were counted in the 2020 Census and the district lines are the 2026 boundary file, so a fast-growing area may have changed since; ZIP Codes here are the Census Bureau's ZIP Code Tabulation Areas; a share is a share of homes, not the chance that one address is in a district; and a district is not a school attendance zone. Every source, file and caveat is on the method page.