ZIP Code 92009 · Carlsbad, California
San Diego County · 17,376 counted · 4 districts
Each percentage here is a share of the 17,376 homes counted in ZIP Code 92009, 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 92009, Carlsbad, California are not the districts named for high school, and the set changes in both directions: 1 district arrives for high school only, 1 runs the early grades and stops, and 2 serve both bands. 4 districts hold the 17,376 homes counted here between them, and Encinitas Union Elementary and San Dieguito Union High hold the most of them, 9,047 homes each. The largest share leaves 8,329 homes elsewhere: 8,329 homes with San Marcos Unified and Carlsbad Unified. The area sits in San Diego County, California.
Three districts share the early grades
3 districts hold a measurable share of ZIP Code 92009 at this level. Encinitas Union Elementary is the largest with 9,047 homes; the smallest of them holds 1,951 homes. Encinitas Union Elementary is named here for grade school and not for high school.
Every track below is 35 cells long and stands for all 17,376 homes counted in ZIP Code 92009, so one cell is 496 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.
- Encinitas Union Elementary School District9,047 of 17,376 homes52%
- San Marcos Unified School District6,378 of 17,376 homes37%
- Carlsbad Unified School District1,951 of 17,376 homes11%
Three districts share high school
3 districts hold a measurable share of ZIP Code 92009 at this level. San Dieguito Union High is the largest with 9,047 homes; the smallest of them holds 1,951 homes. San Dieguito Union High is named here for high school and not for the early grades.
- San Dieguito Union High School District9,047 of 17,376 homes52%
- San Marcos Unified School District6,378 of 17,376 homes37%
- Carlsbad Unified School District1,951 of 17,376 homes11%
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:
- Encinitas Union Elementary School District NCES ID 0612750 eusd.net (760) 944-4300
- San Dieguito Union High School District NCES ID 0634380 sduhsd.net (760) 753-6491
- San Marcos Unified School District NCES ID 0634880 smusd.org (760) 752-1299
- Carlsbad Unified School District NCES ID 0607500 carlsbadusd.net (760) 331-5000
The set of names changes in both directions
San Dieguito Union High is named for high school here and for no elementary grades, and Encinitas Union Elementary runs 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 92009
A lookup that answers ZIP Code 92009 with one district name has to pick one of the names below and drop the rest. Measured against the 17,376 homes counted here, for the early grades it is wrong for 8,329 homes and for high school it is wrong for 8,329 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 92009
The districts named above are not alike in size or in reach. San Dieguito Union High touches 14 ZIP Code areas in all and holds 9,047 homes inside this one; Encinitas Union Elementary touches 6 areas. San Marcos Unified is the only district in at least one ZIP Code area somewhere in the country, while Encinitas Union Elementary is never the only one anywhere: every postal area it touches, it shares.
- Encinitas Union Elementary School District9,047 of 17,376 here · 6 ZIP areas in all
- San Dieguito Union High School District9,047 of 17,376 here · 14 ZIP areas in all
- San Marcos Unified School District6,378 of 17,376 here · 10 ZIP areas in all
- Carlsbad Unified School District1,951 of 17,376 here · 8 ZIP areas in all
Where Encinitas Union Elementary goes from here
Encinitas Union Elementary School District runs kindergarten through grade 6, and it shares 4 of the 6 ZIP Code areas it touches with neighbors, holds under half a percent of the homes in the remaining 2, and is the only district in none of them. Inside its own boundary it holds 30,040 homes over 23 square miles; the part of it counted in ZIP Code 92009 is 9,047 of those. The district it shares the most postal ground with is San Dieguito Union High School District, across 4 ZIP Code areas. Its thinnest measured foothold is elsewhere: in ZIP Code area 92067 it holds 44 of 3,910 homes, or 1.1% of them.
How 92009 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, 150 areas in California name more than this ZIP Code does and 1,489 name fewer. Nationally more than one district is named in 53% of 33,555 areas.
Look up 92009 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 92009 recomputes the same 17,376 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: 8,329 of the 17,376 homes counted in 92009 sit outside each of the 2 districts tied for the most of them, and the line 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.