| City: | San Luis, Arizona |
| City Alias: | Gadsden |
| County: | Yuma County |
| Timezone: | Mountain (GMT -07:00)%> |
| Local Time: | 10:08:12 PM |
| Population: | 7,810 [See All] |
| Area Code: | 928 |
| Classification: | PO Box |
| Coordinates: | 32.5281, -114.7747 |
| Land Area: | 9.783 sq mi |
| Quick Link: |
San Luis sits at Arizona's southwestern corner, directly across the border from San Luis Rio Colorado, Sonora, Mexico. With 7,810 residents, this is one of the most populated communities designated as a PO Box ZIP code. The city name appears twice in the official postal records: San Luis (primary) and Gadsden (alternate), though both names point to the same post office.
This is a PO Box Only Zone. There's no alternative mail delivery across the 33-square-mile territory. Despite this classification, the USPS operates limited street delivery here. One city carrier route and two rural carrier routes serve 213 streets, mostly in residential subdivisions. The post office maintains just 198 PO Boxes for 2,060 households, a 9.6% adoption rate that's unusually low for a PO Box Only Zone. Most residents receive mail via rural route delivery to their homes.
Street names tell the story of a binational community. Main Street (both North and South sections) carries the most delivery points with 57 records total. Spanish names dominate the landscape: San Luis Lane, Juan Sanchez Boulevard, Los Olivos Drive, San Pedro Street, Cesar Chavez Street. Historic figures appear alongside geographic references: E Udall Lane, E Kennedy Lane, Rio Sonora Street. The Gadsden street name honors the 1853 Gadsden Purchase that brought this region into U.S. territory.
With a median age of 31.6 years, San Luis is a young community. Just 3.9% of the population is 65 or older (305 people), while families with children are the norm. The population-to-household ratio of 3.79 indicates larger families, common in border communities. Racial composition shows the city's diverse character: 82% identify with races other than the standard census categories, reflecting the fluid nature of identity in a border region.
Transportation and warehousing dominate the local economy. 2,343 workers (about 30% of the workforce) work in this sector, a clear indicator of San Luis's role as a border logistics hub. The San Luis Port of Entry handles commercial and passenger traffic between the United States and Mexico. Educational attainment runs low at 15.6% with bachelor's degrees, though median household income of $58,314 sits near Arizona's median for small communities.
Nearby neighborhoods with Spanish names cluster around the post office: Bienestar Estates sits 0.2 miles away, while Las Fuentes and Las Villas De San Luis spread across subdivisions 2.6 to 2.8 miles distant. These communities receive mail through this ZIP code despite their distance from the central post office, highlighting the regional service pattern common in border areas.
For mailing purposes, both "San Luis, AZ 85336" and "Gadsden, AZ 85336" are valid address formats. USPS recognizes Gadsden as an official alias, added to the database in November 2019. The dual naming preserves both the current city identity and the historic settlement name. PO Boxes remain available for those who prefer centralized mail pickup, though rural route delivery has become the primary method for most residents.
Street names blend Spanish heritage (San Luis Ln, Juan Sanchez Blvd, Cesar Chavez St) with American historic figures (Udall, Kennedy) and a numbered grid system (4th Ave, 9th Ave).
ZIP Code 85336 has 7,810 residents and 2,060 households (average 3.78 persons per household). The median age is 31.6 years, significantly younger than the state (38.9) and significantly younger than the nation (38.8). The gender split is 48.2% male and 51.8% female, which is slightly lower than the state male share (49.5%), making this a female-majority area. Largest groups are Hispanic or Latino (98.4%) and Other / Two or More Races (40.9%, much higher than the state average of 12.6% and well above the national average of 8.4%); Hispanic or Latino residents make up 98.4%, which is much higher than the national average (18.7%), and Other / Two or More Races share is much higher than both the state (12.6%) and national averages (8.4%).
Explore More:Population Over TimeBy Age & GenderBy RaceBy GenderNativity & Citizenship
| 2020 Population: | 7,810Source: Census DHC |
| 2024 ACS Population Estimate: | 7,884Source: Census ACS |
| 2026 ZC Population Estimate: | 0Source: ZIP-Codes.com |
| Population Density: | 798.3 people per sq mile |
| Average Income: | $58,314Source: Census ACS |
| Households: | 2,060Source: Census DHC |
| Average House Value: | $198,000Source: Census ACS |
| Persons Per Household: | 3.78Source: Census DHC |
| Average Family Size: | 3.00Source: Census ACS |
| Group | 2010 | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Census ACS Population Estimate | -- | 502 | 537 | 560 | 714 | 579 | 558 | 502 | 441 | 510 | 873 | 10,318 | 9,780 | 7,884 |
| Decennial Census | 700 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 7,810 | -- | -- | -- |
Median Age: 31.6
Male Median Age: 29
Female Median Age: 33.7
| Group | < 5 | 5-9 | 10-14 | 15-19 | 20-24 | 25-29 | 30-34 | 35-39 | 40-44 | 45-49 | 50-54 | 55-59 | 60-64 | 65-69 | 70-74 | 75-79 | 80-84 | 85+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Male | 305 | 350 | 417 | 370 | 245 | 248 | 198 | 269 | 153 | 208 | 223 | 269 | 174 | 134 | 78 | 48 | 41 | 38 |
| Female | 312 | 291 | 309 | 374 | 265 | 249 | 297 | 250 | 195 | 285 | 366 | 278 | 190 | 149 | 91 | 62 | 51 | 28 |
| Total | 617 | 641 | 726 | 744 | 510 | 497 | 495 | 519 | 348 | 493 | 589 | 547 | 364 | 283 | 169 | 110 | 92 | 66 |
| White: | 1,639 | 13.00% |
| Black: | 7 | 0.06% |
| Hispanic:* | 7,685 | 60.97% |
| Asian: | 2 | 0.02% |
| American Indian: | 70 | 0.56% |
| Hawaiian: | 4 | 0.03% |
| Other: | 3,198 | 25.37% |
| Total: | 12,605 | 100% |
| Gender | Count | % | Median Age |
|---|---|---|---|
| Males: | 3,768 | 48.25% | 29.0 years |
| Females: | 4,042 | 51.75% | 33.7 years |
| Total: | 7,810 | 100% | 31.6 years |
| Native, born in the United States: | 4,037 | 51.20% |
| Native, born in PR, Island Areas, or abroad: | 27 | 0.34% |
| Foreign born, naturalized U.S. citizen: | 1,391 | 17.64% |
| Foreign born, not a U.S. citizen: | 2,429 | 48.45% |
| Total Population: | 7,884 | 100% |
| Total Native Population: | 4,064 | 51.55% |
| Total Foreign-born Population: | 3,820 | 48.45% |
In 2023, the Median household income is $58,314, which is far less than the national median ($78,538), is up $29,728 (104.0%) since 2011 and above its 2019 pre-pandemic level by $14,043. Family households earn a median of $45,571 versus $0 for nonfamily households (a difference of $45,571). By gender, male median income is $45,673 and female is $37,797, which is considerably lower than the national female median ($53,445), with a current gap of $7,876 that has stayed about the same from 2011 to 2023. The labor-force participation rate is 62.7%, which is a bit higher than the state rate (60.5%). The unemployment rate is 10.6%, which is much higher than the state rate (5.1%). The largest occupation group is Service (24.1%).
Explore More:Income Over TimeHousehold IncomeEmployment StatusBy Occupation
| Income Type | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Household Income | $28,586 | $29,708 | $29,083 | $30,000 | $0 | $38,393 | $31,105 | $32,351 | $44,271 | $36,311 | $39,161 | $45,305 | $58,314 |
| Median Family Income | $26,650 | $29,375 | $27,885 | $31,154 | $38,333 | $45,417 | $31,424 | $40,568 | $44,271 | $36,311 | $38,224 | $41,440 | $45,571 |
| Median NonFamily Income | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $63,097 | $0 |
| Median Male Income | $26,700 | $27,404 | $26,611 | $27,000 | $35,625 | $27,353 | $40,125 | $43,654 | $32,016 | $33,846 | $34,514 | $39,268 | $45,673 |
| Median Female Income | $18,611 | $15,000 | $19,750 | $19,338 | $18,000 | $22,321 | $20,739 | $19,700 | $23,958 | $36,134 | $34,275 | $35,595 | $37,797 |
| Employed: | 3,118 | 56.05% |
| Unemployed: | 370 | 6.65% |
| Not In Labor Force: | 2,075 | 37.30% |
| Total: | 5,563 | 100% |
| Management, business, science, and arts: | 639 | 20.49% |
| Service: | 750 | 24.05% |
| Sales and Office: | 452 | 14.50% |
| Natural resources, construction, and maintenance: | 647 | 20.75% |
| Production, transportation, and material moving: | 630 | 20.21% |
| Total Civilian Employed Population: | 3,118 | 100% |
In 2023, the median home value is $198,000, which is well under the state median ($358,900), is up $43,500 (28.16%) since 2011 and above its 2019 pre-pandemic level by $69,300. The median gross rent is $837, which is much lower than the state median ($1,431), is up $489 (140.52%) since 2011 and below its 2019 pre-pandemic level by $93. Of occupied housing, owners make up 56.03% (76.48% with a mortgage, 23.52% free-and-clear) and renters 43.97% - making this ZIP Code less home ownership than the state and higher than national rental averages. The vacancy rate is 1.30%, which is markedly below the state rate (11.00%).
Explore More:Compare Home ValueHome Value Over TimeRent & Over TimeHousing Occupancy
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Home Value | $154,500 | $152,900 | $110,200 | $120,300 | $0 | $0 | $91,100 | $93,300 | $128,700 | $131,700 | $153,500 | $183,700 | $198,000 |
| Less than $500: | 303 | 26.63% |
| $500 to $999: | 469 | 41.21% |
| $1,000 to $1,499: | 323 | 28.38% |
| $1,500 to $1,999: | 0 | 0.00% |
| $2,000 to $2,499: | 0 | 0.00% |
| $2,500 to $2,999: | 0 | 0.00% |
| $3,000 or more: | 0 | 0.00% |
| No Rent: | 43 | 3.78% |
| Total: | 1,138 | 100% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Rent | $348 | $336 | $569 | $576 | $583 | $583 | $710 | $823 | $930 | $427 | $691 | $860 | $837 |
| Owner Occupied (with mortgage): | 1,109 | 42.85% |
| Owner Occupied (free and clear, no mortgage): | 341 | 13.18% |
| Renter Occupied: | 1,138 | 43.97% |
| Total Occupied Housing Units: | 2,588 | 100% |
| Occupied Housing Units: | 2,588 | 98.70% |
| Vacant Housing Units (not graphed): | 34 | 1.30% |
| Total Housing Units: | 2,622 | 100% |
| Single-Family Units: | 1,851 | 70.59% |
| Multi-Family Units: | 477 | 18.19% |
| Other Units: | 294 | 11.21% |
| Total Housing Units: | 2,622 | 100% |
In 2023, 15.60% of adults (25+) have a bachelor's degree or higher, which is far lower than the national rate (35.00%). High school or higher is 56.30%, which is far lower than the national rate (89.40%). The uninsured rate is 21.70%, which is far higher than the national rate (8.60%). Private coverage is 35.00%, which is falls below the national rate (67.30%). Public coverage is 47.00%, which is well above the national rate (36.30%). The share of people in poverty is 22.70%, which is far higher than the national rate (8.70%), down 16.50 percentage points since 2011 and below its 2019 pre-pandemic level by 0.70 percentage points. This points to a pronounced improvement in local conditions - rising incomes, firmer consumer demand, and a stronger tax base. Among residents ages 3+, the largest enrollment group is elementary (50.08%). College enrollment is 16.97%, which is far lower than the national rate (26.70%), indicating the community may be more oriented toward vocational/trade or direct-to-workforce opportunities.
Explore More:Educational AttainmentHealth InsurancePoverty Over TimeSchool Enrollment
| Less than 9th grade: | 1,139 | 26.25% |
| 9th to 12th grade, no diploma: | 758 | 17.47% |
| High school graduate (includes equivalency): | 843 | 19.43% |
| Some college, no degree: | 662 | 15.26% |
| Associate's degree: | 258 | 5.95% |
| Bachelor's degree: | 562 | 12.95% |
| Graduate or professional degree: | 117 | 2.70% |
| Total: | 4,339 | 100% |
| High school or higher: | 2,442 | 56.28% |
| Bachelor's degree or higher: | 679 | 15.65% |
| Private Insurance: | 2,756 | 33.72% |
| Public Insurance: | 3,708 | 45.37% |
| No Insurance: | 1,709 | 20.91% |
| Total: | 8,173 | 100% |
| Has Health Insurance: | 6,464 | 79.09% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| % of People in Poverty | 39.2% | 32.9% | 25.3% | 18.1% | 19.9% | 24.2% | 31.5% | 29.0% | 23.4% | 12.4% | 26.2% | 25.3% | 22.7% |
Note: Counts of Families & People in poverty are not published at the ZIP Code level due to small sample sizes. Percentages shown are survey estimates from the American Community Survey (ACS). They may differ from official poverty statistics. The U.S. Census Bureau defines poverty status by comparing a family's or individual's total income with federal poverty thresholds that vary by family size and composition.
| Nursery School, Preschool: | 93 | 3.80% |
| Kindergarten: | 179 | 7.32% |
| Elementary school (grades 1-8): | 1,225 | 50.08% |
| High school (grades 9-12): | 534 | 21.83% |
| College or graduate school: | 415 | 16.97% |
| Total: | 2,446 | 100% |
| Early Childhood: | 272 | 11.12% |
| K-12 (Primary & Secondary School): | 1,938 | 79.23% |
ZIP Code 85336 supports both business and residential activity. According to the Business Census (2024), there are 68 business establishments, employing about 298 people with an annual payroll of $8,823,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 9,335Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 68Source: CBP |
| 1st Quarter Payroll: | $2,130,000Source: CBP |
| Annual Payroll: | $8,823,000Source: CBP |
| # of Employees: | 298Source: CBP |
ZIP Code 85336 is located in Yuma County, Arizona, within the Yuma, AZ Metropolitan Statistical Area (CBSA 49740) and Arizona's 7th Congressional District. This Metro area has a population of 207,685 people, about 3.76% of whom live in ZIP Code 85336. It covers 9.783 sq mi of land and a water area of 0.068 sq mi.
| CBSA Name: | Yuma, AZSource: Census |
| CBSA Number: | 49740Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 207,685Source: Census |
| MSA: | Yuma, AZ MSASource: Census |
| Land Area: | 9.783 sq miSource: Census |
| Water Area: | 0.068 sq miSource: Census |
| Congressional District: | 07Source: USPS |
| Congressional Land Area: | 205.12 sq miSource: Census |
| PMSA: | --Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 0463470Source: Census |
| Place Name: | San Luis city; ArizonaSource: Census |
ZIP Code 85336 is in the Gadsden Elementary District, which serves grades Pre-Kindergarten thru 8th. There are 1 public school(s) in this ZIP Code, and we have located 3 private school(s). It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.
Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on January 1, 2026.