ZIP Code 91950 · National City, California
San Diego County · 18,097 counted · 3 districts
Each percentage here is a share of the 18,097 homes counted in ZIP Code 91950, 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 91950, National City, 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 2 run the early grades and stop. 3 districts hold the 18,097 homes counted here between them, and Sweetwater Union High is the largest by homes. Districts holding under half a percent of the homes named at their own level are listed separately below and are not counted in that number. The area sits in San Diego County, California.
The early grades are split between two districts
2 districts hold a measurable share of ZIP Code 91950 at this level. National Elementary is the largest with 17,532 homes; the smallest of them holds 565 homes. National Elementary and Chula Vista Elementary are named here for grade school and not for high school.
Every track below is 35 cells long and stands for all 18,097 homes counted in ZIP Code 91950, so one cell is 517 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.
- National Elementary School District17,532 of 18,097 homes97%
- Chula Vista Elementary School District565 of 18,097 homes3.1%
San Diego City Unified School District reaches into ZIP Code 91950 at the grade school level and holds no home counted in it: the boundary crosses the postal area without picking up a single one.
One district covers high school, and a sliver does not
Sweetwater Union High School District is the only high school district holding a measurable share of ZIP Code 91950, with 18,097 of the 18,097 homes counted in the area; 1 district more is named below the half-percent line. Sweetwater Union High is named here for high school and not for the early grades.
- Sweetwater Union High School District18,097 of 18,097 homes100%
San Diego City Unified School District reaches into ZIP Code 91950 at the high school level and holds no home counted in it: the boundary crosses the postal area without picking up a single one.
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:
- Sweetwater Union High School District NCES ID 0638640 sweetwaterschools.org (619) 691-5500
- National Elementary School District NCES ID 0626670 nsd.us (619) 336-7500
- Chula Vista Elementary School District NCES ID 0608610 cvesd.org (619) 425-9600
The set of names changes in both directions
Sweetwater Union High is named for high school here and for no elementary grades, and National Elementary and Chula Vista Elementary 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 91950
A lookup that answers ZIP Code 91950 with one district name has to pick one of the names below and drop the rest. Measured against the 18,097 homes counted here, for the early grades it is wrong for 565 homes and for high school one name is right for every home counted. 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 91950
The districts named above are not alike in size or in reach. Sweetwater Union High touches 17 ZIP Code areas in all and holds 18,097 homes inside this one; National Elementary touches 5 areas. 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.
- Sweetwater Union High School District18,097 of 18,097 here · 17 ZIP areas in all
- National Elementary School District17,532 of 18,097 here · 5 ZIP areas in all
- Chula Vista Elementary School District565 of 18,097 here · 11 ZIP areas in all
Where National Elementary goes from here
National Elementary School District runs kindergarten through grade 6, and it shares 1 of the 5 ZIP Code areas it touches with neighbors, holds under half a percent of the homes in the remaining 4, and is the only district in none of them. Inside its own boundary it holds 17,647 homes over 8 square miles; the part of it counted in ZIP Code 91950 is 17,532 of those. The district it shares the most postal ground with is Chula Vista Elementary School District, across 1 ZIP Code area.
How 91950 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, 299 areas in California name more than this ZIP Code does and 1,208 name fewer. Nationally more than one district is named in 53% of 33,555 areas.
Look up 91950 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 91950 recomputes the same 18,097 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: one district covers every home counted in 91950, and even then the street is what enrolls a child, because magnet, charter and choice programs ignore the boundary entirely.
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.