ZIP Code 94954 · Petaluma, California
Sonoma County · 14,910 counted · 5 districts
Each percentage here is a share of the 14,910 homes counted in ZIP Code 94954, not the chance that any one address is in that district. Enrollment follows the street: two houses on opposite sides of the same road can be in different districts, and only the district office can say which.
The districts named for the early grades in ZIP Code 94954, Petaluma, California are not the districts named for high school, and the set changes in both directions: 1 district arrives for high school that no elementary answer names, and 4 run the early grades and stop. 5 districts hold the 14,910 homes counted here between them, and Petaluma Joint Union High is the largest by homes. The largest share is high enough that one name is right for most of the homes counted and wrong for the other 6: 6 homes in a district too small to name here.
The early grades are divided four ways
4 districts hold a measurable share of ZIP Code 94954 at this level. Old Adobe Union Elementary is the largest with 9,795 homes; the smallest of them holds 224 homes. Old Adobe Union Elementary, Waugh Elementary, Petaluma City Elementary and one more district are named here for grade school and not for high school.
Every track below is 35 cells long and stands for all 14,910 homes counted in ZIP Code 94954, so one cell is 426 homes, rounded to the nearest whole cell. Cells lit solid are the homes one district holds, and the unlit cells are the homes held by the other districts in the same list.
- Old Adobe Union Elementary School District9,795 of 14,910 homes66%
- Waugh Elementary School District2,524 of 14,910 homes17%
- Petaluma City Elementary School District2,361 of 14,910 homes16%
- Cinnabar Elementary School District224 of 14,910 homes1.5%
Below half a percent at the grade school level: Sonoma Valley Unified School District holds 6 homes, which is why it is counted under the list rather than inside it. A lookup that named it alongside the districts above would be listing a boundary crossing rather than an answer.
One district covers high school, and a sliver does not
Petaluma Joint Union High School District is the only high school district holding a measurable share of ZIP Code 94954, with 14,904 of the 14,910 homes counted in the area; 1 district more is named below the half-percent line. Petaluma Joint Union High is named here for high school and not for the early grades.
- Petaluma Joint Union High School District14,904 of 14,910 homes100%
Below half a percent at the high school level: Sonoma Valley Unified School District holds 6 homes, which is why it is counted under the list rather than inside it. A lookup that named it alongside the districts above would be listing a boundary crossing rather than an answer.
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.
Check an exact address with the Census Geocoder
Then confirm it with the district office. Each district named here, with its NCES district ID, website and phone:
- Petaluma Joint Union High School District NCES ID 0630250 petalumacityschools.org (707) 778-4604
- Old Adobe Union Elementary School District NCES ID 0628320 oldadobe.org (707) 765-4322
- Waugh Elementary School District NCES ID 0641790 waughsd.org (707) 762-0202
- Petaluma City Elementary School District NCES ID 0630230 petalumacityschools.org (707) 778-4604
- Cinnabar Elementary School District NCES ID 0608700 cinnabar.org (707) 765-4345
The set of names changes in both directions
Petaluma Joint Union High is named for high school here and for no elementary grades, and Old Adobe Union Elementary, Waugh Elementary, Petaluma City Elementary and one more district run the early grades and no more. An address on the wrong street can therefore change district at the change of grade and land in a district that was never part of its elementary answer, while a neighbor two blocks away keeps one name the whole way through.
What one district name costs in 94954
A lookup that answers ZIP Code 94954 with one district name has to pick one of the names below and drop the rest. Measured against the 14,910 homes counted here, for the early grades it is wrong for 5,115 homes and for high school it is wrong for 6 homes. That is the whole difference between this page and a one-line answer: the same federal file, read to the end instead of to the first row.
The districts that reach into 94954
The districts named above are not alike in size or in reach. Petaluma Joint Union High touches 10 ZIP Code areas in all and holds 14,904 homes inside this one; Waugh Elementary touches 1 area. Not one of them is ever the only district in a ZIP Code area anywhere in the country: every postal area they touch, they share with somebody.
- Petaluma Joint Union High School District14,904 of 14,910 here · 10 ZIP areas in all
- Old Adobe Union Elementary School District9,795 of 14,910 here · 4 ZIP areas in all
- Waugh Elementary School District2,524 of 14,910 here · 1 ZIP area in all
- Petaluma City Elementary School District2,361 of 14,910 here · 5 ZIP areas in all
- Cinnabar Elementary School District224 of 14,910 here · 2 ZIP areas in all
Where Old Adobe Union Elementary goes from here
Old Adobe Union Elementary School District runs kindergarten through grade 6, and it shares 1 of the 4 ZIP Code areas it touches with neighbors, holds under half a percent of the homes in the remaining 3, and is the only district in none of them. Inside its own boundary it holds 9,907 homes over 75 square miles; the part of it counted in ZIP Code 94954 is 9,795 of those. The district it shares the most postal ground with is Cinnabar Elementary School District, across 1 ZIP Code area.
How 94954 compares in California
Across California the boundary file names more than one district in 996 of the 1,788 ZIP Code areas it names a district for, 56% of them, and 3 areas in the state have no high school district named for part of their homes. Counting the districts named at either level, 70 areas in California name more than this ZIP Code does and 1,638 name fewer. Nationally more than one district is named in 53% of 33,555 areas.
Look up 94954 again, or look up another ZIP Code
The lookup holds every ZIP Code area in the country with homes in it, including the ones with no page of their own. Opening it at 94954 recomputes the same 14,910 homes from the same snapshot, and typing five other digits answers for somewhere else. No server is asked for the answer: the whole index travels with the lookup page itself.
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: 6 of the 14,910 homes counted in 94954 sit outside the district holding the most of them, and the line between the two runs along streets rather than around the postal area.
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.
What this site can hand you instead:
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.