California MATHCOUNTS ZIP Codes
Please find your ZIP Code on this list to determine the number of the chapter that holds your local
competition. Then use the number to refer to the chapter list at the end of this document to find
the local chapter name and website. If you have any questions regarding this list, please visit
www.mathcounts-ca.org or contact the California MATHCOUNTS hotline at mathcounts@cspe.com.
Please note that this ZIP Code list is only a guide and can be changed by decisions of local MATHCOUNTS coordinators or by the
California Society of Professional Engineers Education Foundation.
90001 — TBD
90002-07 — 30, 32
90008-10 — TBD
90011 — 30, 32
90012 — TBD
90013-21 — 15
90022 — 28
90023 — 15
90024-25 — 32
90026-31 — TBD
90032-33 — 15
90034-35 — 32
90036 — TBD
90037 — 30, 32
90038-39 — TBD
90040 — 28
90041-43 — TBD
90044 — 30, 32
90045 — 32
90046 — TBD
90047 — 30, 32
90048 — TBD
90049 — 32
90050-57 — TBD
90058 — 28
90059 — 30
90060 — TBD
90061 — 30
90062 — TBD
90063 — 15
90064 — 32
90065 — TBD
90066-67 — 32
90068-76 — TBD
90077 — 32
90078 — TBD
90079 — 15
90080-88 — TBD
90089 — 30, 32
90090 — 15
90091-101 — TBD
90201 — 28
90209-13 — 32
90220-24 — 30
90230-33 — 32
90239 — TBD
90240 — 28
90241 — 28
90242 — 28
90243 — 28
90245-54 — 30
90255 — 28
90260-64 — 30
90265 — 32
90266 — 30
90270 — 28
90271-73 — 32
90274-78 — 30
90280 — 28
90290-96 — TBD
90300-99 — 32
90400-99 — 32
90500-99 — 30
90601-10 — 28
90620-30 — 16
90631-33 — 28
90637 — TBD
90638 — 28
90639-49 — TBD
90650 — 30, 32
90651-69 — TBD
90670 — 28
90671-80 — TBD
90701 — 28
90702-07 — TBD
90710 — 30
90711-16 — TBD
90717 — 30
90720-22 — TBD
90723 — 30, 32
90731-49 — 30
90750-99 — 30, 32
90800-99 — 30, 32
91001-31 — TBD
91040-43 — 15
91101-29 — TBD
91202-26 — TBD
91301-19 — 15
91320 — 34
91321-59 — 15
91360-61 — 34
91362-95 — 15
91400-99 — 15
91500-99 — 15
91600-99 — 15
91701-19 — 28
91720 — 20
91721-38 — 28
91739 — 20
91740-73 — 28
91775-80 — TBD
91784-93 — 28
91800-02 — TBD
91803 — 28
91804-99 — TBD
91900-80 — 13
92000-99 — 13
92100-99 — 13
92201-26 — 20
92227-31 — 13
92234-42 — 20
92243-51 — 13
92253-80 — 20
92281-83 — 13
92284-99 — 20
92300-99 — 20
92400-99 — 20
92500-99 — 20
92600-99 — 16
92700-99 — 16
92800-99 — 16
93000-99 — 34
93100-99 — 34
93200-02 — 05
93203 — 14
93204-40 — 05
93241 — 14
93242 — 05
93243 — 14
93244-79 — 05
93280-85 — 14
93286 — 05
93287-99 — 14
93300-99 — 14
93400-99 — 11
93500-16 — 14
93517 — 03
93518-99 — 14
93600-99 — 05
93700-99 — 05
93900-99 — 25
94000-86 — 07
94087 — 06
94088-99 — 07
94100-99 — 01
94300-99 — 06
94400-99 — 07
94501-05 — 10
94506-07 — 18
94508 — 21
94509-24 — 18
94525 — 10
94526-28 — 18
94530 — 10
94531-35 — 18
94536-39 — 06
94540-47 — 10
94548-57 — 18
94558-59 — 21
94560 — 10
94561-63 — 18
94564 — 10
94565-66 — 18
94567 — 21
94568-71 — 18
94572 — 10
94574-76 — 21
94577-80 — 10
94581 — 06
94582-86 — 18
94587 — 06
94588-99 — 18
94600-99 — 10
94700-99 — 10
94800-99 — 10
94900-27 — 19
94928 — 21
94929-51 — 19
94952 — 21
94953-99 — 19
95000-01 — 25
95002 — 06
95003-07 — 25
95008-09 — 06
95010 — 25
95011 — 06
95012 — 25
95013-15 — 06
95016-24 — 25
95030-56 — 06
95060-69 — 25
95070-71 — 06
95072-77 — 25
95100-99 — 06
95200-99 — 08
95300-99 — 08
95401-09 — 21
95410-11 — 18
95412 — 21
95413 — 18
95414-15 — 35
95416-20 — 18
95421 — 21
95422 — 35
95423-24 — 18
95425-36 — 21
95437-39 — 35
95441-50 — 21
95451-61 — 35
95462-66 — 21
95468-70 — 35
95472-81 — 21
95482-90 — 35
95492-97 — 21
95500-99 — 36
95601-19 — 03
95620 — 18
95621-24 — 03
95625 — 18
95626-36 — 03
95637 — 18
95638-39 — 03
95640-47 — 08
95648 — 03
95649 — 08
95650 — 03
95651-52 — 08
95653 — 18
95654-57 — 08
95658 — 03
95659 — 08
95660 — 03
95661 — 08
95662-63 — 03
95664-66 — 08
95667-68 — 03
95669 — 08
95670-82 — 03
95683 — 18
95684 — 03
95685 — 08
95686-99 — 03
95700-99 — 03
95800-99 — 03
95900-99 — 03
96000-99 — 37
96101-06 — 37
96107 — 03
96108-17 — 37
96118 — 03
96119 — 37
96120 — 03
96121 — 37
96122 — 03
96123-29 — 37
96130 — 03
96131-99 — 37
Updated 10/01/14
California MATHCOUNTS ZIP Codes
Please find your ZIP Code on this list to determine the number of the chapter that holds your local
competition. Then use the number to refer to the chapter list at the end of this document to find
the local chapter name and website. If you have any questions regarding this list, please visit
www.mathcounts-ca.org or contact the California MATHCOUNTS hotline at mathcounts@cspe.com.
Please note that this ZIP Code list is only a guide and can be changed by decisions of local MATHCOUNTS coordinators or by the
California Society of Professional Engineers Education Foundation.
01 Golden Gate
94100-99 — 01
03 Sacramento
Valley
93517 — 03
95601-19 — 03
95621-24 — 03
95626-36 — 03
95638-39 — 03
95648 — 03
95650 — 03
95658 — 03
95660 — 03
95662-63 — 03
95667-68 — 03
95670-82 — 03
95684 — 03
95686-99 — 03
95700-99 — 03
95800-99 — 03
95900-99 — 03
96107 — 03
96118 — 03
96120 — 03
96122 — 03
96130 — 03
05 Fresno
93200-02 — 05
93204-40 — 05
93242 — 05
93244-79 — 05
93286 — 05
93600-99 — 05
93700-99 — 05
06 Santa Clara
Valley
94087 — 06
94300-99 — 06
94536-39 — 06
94581 — 06
94587 — 06
95002 — 06
95008-09 — 06
95011 — 06
95013-15 — 06
95030-56 — 06
95070-71 — 06
95100-99 — 06
07 Peninsula
94000-94086 — 07
94088-99 — 07
94400-99 — 07
08 San Joaquin
Valley
95200-99 — 08
95300-99 — 08
95640-47 — 08
95649 — 08
95651-52 — 08
95654-57 — 08
95659 — 08
95661 — 08
95664-66 — 08
95669 — 08
95685 — 08
90079 — 15
90090 — 15
91040-43 — 15
91301-19 — 15
91321-59 — 15
91362-95 — 15
91400-99 — 15
91500-99 — 15
91600-99 — 15
10 East Bay
94501-05 — 10
94525 — 10
94530 — 10
94540-47 — 10
94560 — 10
94564 — 10
94572 — 10
94577-80 — 10
94600-99 — 10
94700-99 — 10
94800-99 — 10
18 Diablo
94506-07 — 18
94510-24 — 18
94526-28 — 18
94531-35 — 18
94548-57 — 18
94561-63 — 18
94565-66 — 18
94568-71 — 18
94582-86 — 18
94588-99 — 18
95410-11 — 18
95413 — 18
95416-20 — 18
95423-24 — 18
95620 — 18
95625 — 18
95637 — 18
95653 — 18
95683 — 18
11 Central Coast
93400-99 — 11
13 San Diego
91900-80 — 13
92000-99 — 13
92100-99 — 13
92227-31 — 13
92243-51 — 13
92281-83 — 13
14 Kern County
93203 — 14
93241 — 14
93243 — 14
93280-85 — 14
93287-99 — 14
93300-99 — 14
93500-16 — 14
93518-99 — 14
15 San Fernando
Valley
90013-21 — 15
90023 — 15
90032-33 — 15
90063 — 15
16 Orange County
92600-99 — 16
92700-99 — 16
92800-99 — 16
19 Marin
94900-27 — 19
94929-51 — 19
94953-99 — 19
20 Riverside/San
Bernardino
91720 — 20
91739 — 20
92201-26 — 20
92234-42 — 20
92253-80 — 20
92284-99 — 20
92300-99 — 20
92400-99 — 20
92500-99 — 20
21 Redwood Empire
94508 — 21
94558-59 — 21
94567 — 21
94574-76 — 21
94928 — 21
94952 — 21
95401-09 — 21
95412 — 21
95421 — 21
95425-36 — 21
95441-50 — 21
95462-66 — 21
95472-81 — 21
95492-97 — 21
25 Monterey Bay
93900-99 — 25
95000-01 — 25
95003-07 — 25
95010 — 25
95012 — 25
95016-24 — 25
95060-69 — 25
95072-77 — 25
28 E. San Gabriel
Valley
90022 —28
90040 — 28
90058 — 28
90201 — 28
90240-03 — 28
90255 — 28
90270 — 28
90280 — 28
90601-10 — 28
90631-33 — 28
90638 — 28
90670 — 28
90701 — 28
91701-19 — 28
91721-38 — 28
91740-73 — 28
91784-93 — 28
91803 — 28
30/32 South Bay/
Santa Monica
90002-07 — 30, 32
90011 — 30, 32
90024-25 — 32
90034-35 — 32
90037 — 30, 32
90044 — 30, 32
90045 — 32
90047 — 30, 32
90049 — 32
90059 — 30
90061 — 30
90064 — 32
90066-67 — 32
90077 — 32
90089 — 30, 32
90209-13 — 32
90220-24 — 30
90230-33 — 32
90245-54 — 30
90260-64 — 30
90265 — 32
90266 — 30
90271-73 — 32
90274-78 — 30
90300-99 — 32
90400-99 — 32
90500-99 — 30
90650 — 30, 32
90710 — 30
90717 — 30
90723 — 30, 32
90731-49 — 30
90750-99 — 30, 32
90800-99 — 30, 32
34 Santa Barbara/
Ventura
91320 — 34
91360-61 — 34
93000-99 — 34
93100-99 — 34
35 Mendocino Lake
95414-15 — 35
95422 — 35
95437-39 — 35
95451-61 — 35
95468-70 — 35
95482-90 — 35
36 Eureka
95500-99 — 36
37 Redding
96000-99 — 37
96101-06 — 37
96108-17 — 37
96119 — 37
96121 — 37
96123-29 — 37
96131-99 — 37
Updated 10/01/14
Chapter Numbers, Names, and Websites
01 — Golden Gate — http://www.mathcounts-ca.org/goldengate.html
03 — Sacramento Valley — http://www.mathcounts-ca.org/sacramento.html
05 — Fresno County — http://www.mathcounts-ca.org/fresno.html
06 — Santa Clara Valley — http://www.mathcounts-ca.org/santaclara.html
07 — Peninsula — http://www.mathcounts-ca.org/peninsula.html
08 — San Joaquin — http://www.mathcounts-ca.org/sanjoaquin.html
10 — East Bay — http://www.mathcounts-ca.org/eastbay.html
11 — Central Coast — http://www.mathcounts-ca.org/centralcoast.html
13 — San Diego — http://www.mathcounts-ca.org/sandiego.html
14 — Kern County — http://www.mathcounts-ca.org/kern.html
15 — San Fernando Valley — http://www.mathcounts-ca.org/sanfernando.html
16 — Orange County — http://www.mathcounts-ca.org/orange.html
18 — Diablo — http://www.mathcounts-ca.org/diablo.html
19 — Marin — http://www.mathcounts-ca.org/marin.html
20 — Riverside/San Bernardino — http://www.mathcounts-ca.org/rivsanbern.html
21 — Redwood Empire — http://www.mathcounts-ca.org/redwood.html
25 — Monterey Bay — http://www.mathcounts-ca.org/monterey.html
28 — East San Gabriel Valley — http://www.mathcounts-ca.org/eastsangabriel.html
30 — South Bay/Santa Monica — http://www.mathcounts-ca.org/sbaysantamonica.html
32 — South Bay/Santa Monica — http://www.mathcounts-ca.org/sbaysantamonica.html
34 — Santa Barbara/Ventura — http://www.mathcounts-ca.org/santabarbaraventura.html
35 — Mendocino-Lake — http://www.mathcounts-ca.org/mendolake.html
36 — Eureka — http://www.mathcounts-ca.org/eureka.html
37 — Redding — http://www.mathcounts-ca.org/redding.html
Updated 10/01/14