78575 ZIP Code — Olmito, TX

Cameron County, Texas

ZIP code 78575 is located in Olmito, Texas, within Cameron County. It covers approximately 8.33 square miles and serves a population of 4,649 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 956.

About ZIP code 78575

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1980s, giving the area an established character. Median home value is $178,100. Owner-occupancy sits near the national average at 65%.

The gap between median ($69,971) and mean household income suggests income inequality — a small number of higher earners pull the average up.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 24 minutes is near the national average.

Educational attainment is high — 45% of residents hold a bachelor's degree or higher, well above the national average of 33%.

29% of residents lack health insurance, above the national average.

Notable community characteristics include Spanish spoken in 21% of households.

4,649

population

8.33

sq mi land

Standard

ZIP type

Central (CT)

timezone

78575 ZIP code map

Cities in ZIP code 78575

Below are the cities the US Postal Service accepts for ZIP code 78575. Using any city not on this list may result in mail delivery delays.

City	Status
Olmito	Acceptable
Olmito	Preferred

Nearby ZIP codes

78520 Brownsville (4 mi) 78526 Brownsville (6.6 mi) 78586 San Benito (7.4 mi) 78566 Los Fresnos (10.9 mi) 78521 Brownsville (11.4 mi) 78578 Port Isabel (16 mi) 78550 Harlingen (17.3 mi) 78552 Harlingen (17.7 mi) 78583 Rio Hondo (18.4 mi)

Demographics updated 06/2026

Population
Total population	4,649
Population density	558 / sq mi
State FIPS	48
County FIPS	061

Geography
Land area	8.33 sq mi
Water area	0.62 sq mi
Latitude	26.0250
Longitude	-97.5490
Timezone	Central (CT)
Area code	956

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	35.4%	57.0%	39.5%
$50k – $100k	28.6%	28.1%	30.1%
$100k – $200k	26.9%	12.6%	22.6%
Over $200k	9.0%	2.3%	7.8%

Demographics & statistics

4,649

Population

558

People per sq mi

38.4

Median age

$69,971

Median household income

$36,240

Per capita income

$178,100

Median home value

$1,049

Median monthly rent

65.4%

Home ownership

15.6%

Poverty rate

2.1%

Unemployment

1,295

Housing units

45.1%

Bachelor's or higher

Age distribution

Male Female

Under 5

137

5–9

123

260

10–14

234

247

15–19

221

203

20–24

183

224

25–34

202

296

35–44

265

393

45–54

353

170

55–59

152

112

60–64

101

167

65–74

150

134

75–84

120

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	1,170	25.2%
18 and over	3,479	74.8%
65 and over	633	13.6%
Median age	38.4 years

Race & ethnicity

White 45.6%

Hispanic or Latino 26.4%

Two or more races 20.6%

Other race 5.9%

Asian 1%

American Indian / Alaska Native 0.5%

Group	Count	%
White	2,880	45.6%
Hispanic or Latino	1,669	26.4%
Two or more races	1,304	20.6%
Other race	370	5.9%
Asian	64	1%
American Indian / Alaska Native	31	0.5%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	35.4%	57.0%	39.5%
$50k – $100k	28.6%	28.1%	30.1%
$100k – $200k	26.9%	12.6%	22.6%
Over $200k	9.0%	2.3%	7.8%

Under $10k 5.6%

$10k–$15k 4.0%

$15k–$25k 11.2%

$25k–$35k 2.6%

$35k–$50k 14.8%

$50k–$75k 14.5%

$75k–$100k 11.2%

$100k–$150k 16.4%

$150k–$200k 8.2%

$200k+ 11.3%

Range	% of households
Under $10k	5.6%
$10k–$15k	4.0%
$15k–$25k	11.2%
$25k–$35k	2.6%
$35k–$50k	14.8%
$50k–$75k	14.5%
$75k–$100k	11.2%
$100k–$150k	16.4%
$150k–$200k	8.2%
$200k+	11.3%
Median income	$69,971

Housing

Home values

Under $50k 5.2%

$50k–$100k 23.3%

$100k–$150k 11.1%

$150k–$200k 14.3%

$200k–$300k 22.5%

$300k–$500k 17.3%

$500k–$1M 6.3%

Housing overview

Metric	Value
Median home value	$178,100
Median rent / month	$1,049
Owner occupied	65.4%
Renter occupied	34.6%
Vacant	12.1%
Single-family detached	70.2%
Large apartment buildings	10.8%
Mobile homes	3.3%
Median rooms	5.2
Avg household size (owned)	2.69

Year built

Era	%
2020 or later	1.8%
2010–2019	11.4%
2000–2009	5.9%
1990–1999	13.3%
1980–1989	31.8%
1970–1979	23.7%
1960–1969	5.5%
1950–1959	1.4%
1940–1949	5.3%
1939 or earlier	0.0%

Bedrooms

Size	% of units
No bedroom (studio)	0.2%
1 bedroom	6.1%
2 bedrooms	26.8%
3 bedrooms	43.2%
4 bedrooms	21.2%
5+ bedrooms	2.5%

Vehicles per household

Vehicles	% of households
No vehicle	1.6%
1 vehicle	33.4%
2 vehicles	44.0%
3 or more	21.0%

Heating fuel

Fuel type	%
Utility gas	1.0%
Electricity	97.1%
Propane / LP gas	1.7%
No fuel used	0.2%

Households & families

Household type	Count	%
Married-couple family	878	53.6%
Cohabiting couple	57	3.5%
Male householder, no spouse	244	14.9%
Female householder, no spouse	458	28.0%
Households with children under 18	599	36.6%
Households with seniors (65+)	438	26.8%
Average household size	2.84

Marital status

Status	Male	Female
Never married	37.5%	20.3%
Married	55.3%	56.6%
Separated	1.9%	6.0%
Widowed	1.1%	5.1%
Divorced	4.2%	12.0%

Education

Less than 9th grade 9.7%

Some HS, no diploma 10.2%

HS graduate 15.7%

Some college, no degree 12.4%

Associate's degree 7.0%

Bachelor's degree 29.6%

Graduate / professional 15.5%

Metric	%
HS diploma or higher	80.1%
Bachelor's or higher	45.1%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	34	2.4%
Kindergarten	22	1.5%
Elementary school	647	45.4%
High school	387	27.2%
College / grad school	334	23.5%

Employment

Industry of employment

Education & healthcare 25.9%

Retail trade 12.2%

Arts, food & hospitality 12.1%

Professional & management 11.4%

Manufacturing 8.9%

Finance & real estate 7.2%

Construction 6.3%

Transportation & utilities 4.9%

Agriculture & mining 3.4%

Public administration 3.2%

Wholesale trade 2.8%

Other services 1.3%

Information 0.6%

Occupation

Category	%
Management, business & arts	47.0%
Service	14.9%
Sales & office	25.2%
Natural resources & construction	4.7%
Production & transportation	8.2%

Employment type

Type	%
Private sector	76.2%
Government	13.6%
Self-employed	10.2%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	81.2%
Carpool	6.6%
Public transit	0.0%
Walk	0.0%
Work from home	8.3%
Other means	3.9%
Avg commute (minutes)	24.2

Poverty

All people 15.6%

Under 18 years 23.7%

18 and over 12.8%

Married-couple families 12.3%

Female-led households 24.4%

Income support

Source	% of households
Social Security	28.9%
Retirement income	17.5%
Supplemental Security	4.0%
Cash public assistance	2.9%
Food stamps / SNAP	13.4%

Health indicators

Condition	%
Obesity	37.5%
High blood pressure	27.9%
High cholesterol	31.6%
Diabetes	12.4%
Heart disease	4.9%
Stroke	2.4%
Asthma	7.7%
Arthritis	15.0%
Kidney disease	2.8%
Pulmonary disease	4.2%
Cancer	4.2%

Behavior / access	%
Smoking	13.7%
Binge drinking	18.6%
No physical activity	25.2%
Less than 7 hrs sleep	30.5%
Depression	18.7%
Fair or poor health	19.8%
Poor mental health	14.5%
Poor physical health	11.2%
No health insurance	41.4%
Visited doctor (checkup)	68.7%
Visited dentist	56.6%
Cholesterol screening	88.0%
Teeth loss	10.5%

Veterans & disability

Veterans	Count	%
Civilian veterans	164	4.7%

Disability	%
Any disability	8.1%
Under 18	2.2%
18–64 years	5.2%
65 and over	32.2%

Health insurance coverage

Type	%
Private insurance	48.8%
Public insurance	27.3%
No insurance	28.5%
Uninsured under 19	25.6%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	4,509	97.0%
Spanish	943	20.9%
Other Indo-European	936	20.8%
Asian & Pacific Islander	7	0.2%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	3,287	70.7%
Born in same state	3,263	70.2%
Born in different state	2,832	60.9%
Foreign born	24	0.5%
Naturalized citizen	1,362	29.3%
Not a US citizen	621	45.6%

Ancestry

Ancestry	Count	%
French	158	3.4%
Italian	144	3.1%

Ancestry	Count	%
Arab	44	0.9%
Polish	10	0.2%

Technology access

Metric	% of households
Computer access	35.2%
Internet access	92.4%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 78575

What city is ZIP code 78575 in?

ZIP code 78575 is primarily assigned to Olmito, Texas.

What county is ZIP code 78575 in?

ZIP code 78575 falls within Cameron County, Texas.

Is Spanish widely spoken in ZIP code 78575?

Approximately 21% of households in ZIP code 78575 speak Spanish as a primary language.

What is the poverty rate in ZIP code 78575?

16% of residents in ZIP code 78575 live below the poverty line, above the national average.

How educated is the population of ZIP code 78575?

45% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

What is the typical home value in ZIP code 78575?

The median home value in ZIP code 78575 is $178,100.

What timezone is ZIP code 78575 in?

ZIP code 78575 observes the CST timezone.