Avilla Beach , Pismo Beach. Garey , Santa Maria , Sisquoc. Atascadero , Templeton. California City , Mojave , Rosamond. Inyo County , Mono County. Kern County , San Bernardino County. Johannesburg , Randsburg. Elizabeth Lake , Lake Hughes. Lake Los Angeles , Lancaster , Palmdale. Lake Hughes , Lancaster , Quartz Hill. Lee Vining , Mono City.
Littlerock , Palmdale , Sun Village. Keeler , Lone Pine. Cartago , Olancha. Acton , Palmdale. Palmdale , Sun Village. China Lake Acres , Ridgecrest. Homewood Canyon , Trona , Valley Wells. Ahwahnee , Nipinnawasee. Madera County , Mariposa County. Auberry , Shaver Lake. Cantua Creek , Three Rocks. Chowchilla , Fairmead. Madera County , Merced County. Clovis , Fresno , Tarpey Village. Coarsegold , Yosemite Lakes. Cutler , Monson , Orosi , Yettem.
Fresno County , Tulare County. Clovis , Earlimart , Fresno. Fresno County , Merced County. Clovis , Friant.
Fresno County , Madera County. Biola , Kerman. Kingsburg , Traver. Los Banos , Volta. Fairmead , La Vina , Madera , Parkwood. Fairmead , Madera Acres , Madera , Parksdale. Ahwahnee , Oakhurst. Orange Cove , Squaw Valley. Cutler , East Orosi , Orosi. Lanare , Riverdale. Centerville , Minkler , Sanger. Parlier , Selma. Fresno , Mayfair.
Fresno , Old Fig Garden. Fort Washington , Fresno. Biola , Fresno. Clovis , Fresno , Sunnyside , Tarpey Village. Prunedale , Salinas. Boronda , Elkhorn , Prunedale , Salinas. Chualar , Gonzales , Prunedale , Salinas. King City , Pine Canyon. Monterey County , San Benito County. Del Rey Oaks , Monterey , Seaside. Del Monte Forest , Pacific Grove. Marina , Monterey , Sand City , Seaside.
Belmont , Redwood City. Brisbane , South San Francisco. Colma , Daly City. Broadmoor , Daly City. Atherton , North Fair Oaks , Woodside. Ladera , Menlo Park , Portola Valley. Millbrae , San Bruno. Montara , Moss Beach. Mountain View , Palo Alto , Sunnyvale. Loma Mar , Pescadero. North Fair Oaks , Redwood City.
Redwood City , San Carlos. Belmont , Redwood City , San Carlos. Mountain View , Sunnyvale. Mountain View , Santa Clara , Sunnyvale. San Jose , Sunnyvale. San Bruno , South San Francisco. Palo Alto , Stanford. Foster City , San Mateo. Alameda County , Contra Costa County. Angwin , Deer Park.
Antioch , Pittsburg. Napa County , Sonoma County. Clayton , Concord. Concord , Pleasant Hill , Walnut Creek. Clayton , Concord , Walnut Creek.
Crockett , Rodeo. Alamo , Danville. Alamo , Danville , Diablo. El Cerrito , Kensington , Richmond. Fairfield , Suisun City , Vacaville. Fremont , Sunol. Fairview , Hayward. Hayward , Union City. Castro Valley , Hayward. Hercules , Pinole.
Alameda County , Santa Clara County. Dublin , Livermore. Lafayette , Moraga , Orinda. Antioch , Knightsen , Oakley. Bayview , Pinole , Richmond. Antioch , Bay Point , Pittsburg. Pleasanton , Sunol. Dublin , Pleasanton. Sacramento County , Solano County. Hercules , Rodeo. Deer Park , Rutherford , St. Castro Valley , Oakland , San Leandro. Ashland , Castro Valley , San Leandro. Danville , San Ramon. Danville , Norris Canyon , San Ramon.
Fairfield , Suisun City. Hayward , Pleasanton , Sunol. Hayward , Livermore , Pleasanton , Sunol. American Canyon , Vallejo. Napa County , Solano County. Benicia , Fairfield , Vallejo. Berkeley , Emeryville , Oakland. Berkeley , Oakland. Oakland , Piedmont. Oakland , Orinda , Piedmont. Berkeley , Oakland , Piedmont. Albany , Berkeley , Kensington.
Berkeley , Kensington. Albany , Berkeley. North Richmond , Richmond. El Cerrito , Richmond , San Pablo. Kentfield , Larkspur , Mill Valley , Ross.
Belvedere , Strawberry , Tiburon. Bodega , Valley Ford. Bolinas , Stinson Beach. Cotati , Rohnert Park. Fairfax , Ross , Sleepy Hollow. Cotati , Penngrove , Rohnert Park. Kentfield , Larkspur. Black Point-Green Point , Novato. Penngrove , Petaluma. Bloomfield , Petaluma , Valley Ford. Marin County , Sonoma County. Inverness , Point Reyes Station. Lagunitas-Forest Knolls , San Geronimo. Dillon Beach , Tomales. San Geronimo , Woodacre.
Aromas , Prunedale. Ben Lomond , Brookdale , Lompico. Boulder Creek , Brookdale. Campbell , Los Gatos , San Jose. Capitola , Seacliff. Castroville , Elkhorn , Prunedale. Amesti , Freedom , Interlaken , Watsonville. Gilroy , San Martin. Hollister , Ridgemark , Tres Pinos. Los Gatos , Monte Sereno , Saratoga. Lexington Hills , Lompico , Palo Alto. Milpitas , San Jose. Elkhorn , Moss Landing. Hollister , San Juan Bautista. Morgan Hill , San Martin.
San Jose , Santa Clara. Cupertino , Santa Clara , Sunnyvale. Mount Hermon , Scotts Valley. Capitola , Soquel. Campbell , San Jose , Santa Clara. Cambrian Park , San Jose. Campbell , San Jose. Burbank , Campbell , Fruitdale , San Jose. San Jose , Saratoga.
East Foothills , San Jose. Alum Rock , San Jose. Country Club , Stockton. August , Kennedy , Stockton. Lincoln Village , Stockton. Morada , Stockton. Garden Acres , Kennedy , Stockton , Waterloo.
Acampo , Collierville , Dog. Angels , Vallecito. Arnold , Bear Valley , Dorrington. Arnold , Avery. Farmington , Peters. French Camp , Lathrop , Stockton. Avery , Forest Meadows. Linden , Peters. Lockeford , Lodi , Victor. Lodi , Stockton , Terminous , Woodbridge. Mountain Ranch , Rail Road Flat. Avery , Forest Meadows , Murphys. Rancho Calaveras , Valley Springs , Wallace. Atwater , McSwain. Ballico , Cressey. Lathrop , Mountain House , Tracy.
Coultervillle , Greeley Hill. Mariposa County , Tuolumne County. Denair , Turlock. Empire , Modesto. Gustine , Santa Nella. Ceres , Hughson , Keyes.
Chinese Camp , James , Sonora. Lathrop , Manteca. Le Grand , Planada. Cressey , Livingston. Manteca , Stockton. McSwain , Merced , Tuttle. Mi-Wuk Village , Sierra Village. Franklin , Merced. Airport , Modesto. Del Rio , Modesto , Salida. Empire , Modesto , Riverbank. Crows Landing , Newman. Merced County , Stanislaus County. San Joaquin County , Stanislaus County. Diablo Grande , Grayson , Patterson , Westley.
Modesto , Salida. Lake Don Pedro , Snelling. Mariposa County , Merced County. Alameda County , San Joaquin County. Soulsbyville , Tuolumne City. Delhi , Turlock. Keyes , Turlock. Atwater , Cressey , Winton. El Portal , Wawona , Yosemite Valley. Larkfield-Wikiup , Santa Rosa. Rohnert Park , Roseland , Santa Rosa. Boonville , Philo. Cazadero , Timber Cove.
Clearlake Oaks , Spring Valley. Cloverdale , Geyserville. Mendocino County , Sonoma County. Forestville , Guerneville , Windsor.
Cleone , Fort Bragg. Eldridge , Glen Ellen , Kenwood. Healdsburg , Windsor. Jenner , Timber Cove. Clearlake Riviera , Kelseyville , Soda Bay. Lakeport , North Lakeport. Albion , Little River. Clearlake Riviera , Lower Lake. Caspar , Little River , Mendocino. Cobb , Hidden Valley Lake , Middle. Bodega , Jenner , Occidental. Lake County , Mendocino County. Calpella , Redwood Valley. Graton , Occidental , Santa Rosa , Sebastopol.
Calpella , Talmage , Ukiah. Nice , Upper Lake. Brooktrails , Willits. Larkfield-Wikiup , Windsor. Eureka , Myrtle. Arcata , Eureka , Indianola. Burnt Ranch , Trinity Village. Bertsch-Oceanview , Crescent City , Hiouchi. Fortuna , Hydesville , Rio Dell. Benbow , Garberville. Fields Landing , Loleta. Mad River , Ruth. Myers Flat , Weott.
Redcrest , Weott. Humboldt County , Mendocino County. Auburn , Lake of the Pines , North Auburn. Nevada County , Placer County. Auburn , North Auburn. Arden-Arcade , Carmichael. Citrus Heights , Orangevale. Solano County , Yolo County. Sacramento County , Yolo County. Davis , University of California Davis.
Davis , West Sacramento. Allendale , Dixon , Vacaville , West Sacramento. Elk Grove , Florin. Elmira , Vacaville. Esparto , Madison. Amador County , El Dorado County. Collierville , Dog , Galt , Herald , Thornton. Sacramento County , San Joaquin County.
Coloma , George. Clay , Herald. Jackson , Martell , Pine Grove. Knights Landing , Robbins. Alpine County , Amador County. Lincoln , Sheridan. Mather , Rancho Cordova. Auburn , Newcastle. East Nicolaus , Nicolaus , Trowbridge.
Granite Bay , Roseville. Folsom , Orangevale. Loomis , Penryn , Rocklin. Pine Grove , Red Corral , Volcano. Buckhorn , Kirkwood , Pioneer , Red Corral.
Folsom , Gold River , Rancho Cordova. Cameron Park , El Dorado Hills. Elverta , Rio Linda , Sacramento. East Nicolaus , Rio Oso , Trowbridge. Loomis , Rocklin , Roseville. Rocklin , Roseville. Rancho Cordova , Rancho Murieta. Elmira , Fairfield , Vacaville. Allendale , Hartley , Vacaville.
Pioneer , Volcano. Sutter County , Yuba County. Monument Hills , Woodland , Yolo. Camino , Pollock Pines. Alta , Dutch Flat. Kingvale , Soda Springs. Folsom , Rancho Cordova. Elk Grove , Franklin. Elk Grove , Sacramento.
Davis , Knights Landing , Woodland. Fruitridge Pocket , Lemon Hill , Sacramento. Arden-Arcade , North Highlands , Sacramento. Florin , Parkway , Sacramento. Lemon Hill , Parkway , Sacramento. Arden-Arcade , Sacramento. La Riviera , Rosemont , Sacramento. Florin , Sacramento.
Elk Grove , Sacramento , Vineyard. Elk Grove , Mather , Vineyard. Freeport , Sacramento. Sacramento County , Sutter County. McClellan Park , Sacramento.
Antelope , North Highlands. Butte County , Yuba County. Arbuckle , College City , Dunnigan. Colusa County , Yolo County. Bangor , Rackerby. Belden , Storrie , Tobin. Sierra County , Yuba County. Almanor , Canyondam , Prattville. Butte Creek Canyon , Chico , Durham. Crescent Mills , Indian Falls. Downieville , Goodyears Bar. Clipper Mills , Forbes. Butte Meadows , Forest Ranch. Grass Valley , Rough and Ready.
Lake Wildwood , Penn Valley. Biggs , Gridley. Butte County , Sutter County. Alta Sierra , Grass Valley. Bucks Lake , Meadow Valley. Camptonville , North San Juan , Pike. Linda , Marysville , Olivehurst , Plumas Lake. Artois , Orland. Glenn County , Tehama County. Oroville , Palermo. Colusa County , Glenn County.
However, some ZIP codes have nothing to do with geogaphic areas. When ZIP codes appear to be geographically grouped, a clear shape cannot always be drawn around the ZIP code because ZIP codes are only assigned to a point of delivery and not the spaces between delivery points. In areas without a regular postal route or no mail delivery, ZIP codes may not be defined or have unclear boundaries.
The main issue is discussed above: there simply isn't always a clear geographic boundary for a ZIP code. The Census Bureau and many other commercial services will try to interpolate the data to create polygons shapes using straight lines to represent the approximate area covered by a ZIP code, but none of these maps are official or entirely accurate.
They provide a very close approximation of the area covered by a ZIP code. You can easily notice some of the boundary issues when viewing our maps.
Very rural areas aren't labeled as belonging to a ZIP code such as much of Nevada and Utah where there are few, if any, addresses to deliver mail. If the address is on the same street as a ZIP code boundary on the map, be sure to search for the full street address to determine the ZIP code instead of relying on the map.
Their purpose is to convey statistical data about regions that are familiar to most citizens. As discussed above, it is difficult to precisely define a geographic area covered by a ZIP code. ZCTAs were developed to account for some of the difficulties in assigning an area to a ZIP code and to precisely define a geographic area. In general, they are updated once every 10 years for the Census.
The Census assigns an area to a ZCTA according to census blocks the smallest geographic unit used by the census. Imagine a city block that makes up a typical census block as pictured to the right. It is bounded on all 4 sides by portions of city streets that each have their own name and addresses. The issue is that census blocks almost always split down the middle of the street. ZIP codes rarely do because that would require two postal workers delivering mail to that street - one for each side of the street.
In the example, one mail carrier may deliver to 3 sides of the block via one ZIP code while another mail carrier delivers mail on the other street in a different ZIP code. When this happens, the Census Bureau will assign the entire block to a single ZCTA in this case, because the census block is the area that is precisely measured. If you are getting very precise usually a matter of meters, not miles , census block boundaries near the edge of a ZIP code almost always split ZIP codes.
The statistics provided by the Census Bureau can give insight into the demographics within the ZIP code. For instance, see our ZIP code rankings. Remember that ZIP codes were made to make mail delivery easier. They weren't made to correspond to existing boundaries such as cities, counties, or even states.
If it is more efficient for a mail carrier to drive across a state line to deliver mail, the ZIP code "boundary" will cross the state lines. ZIP codes don't usually cross state lines, but some do , , and are good examples.
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