77861 ZIP Code — Iola, TX

Grimes County, Texas

ZIP code 77861 is located in Iola, Texas, within Grimes County. It covers approximately 115.25 square miles and serves a population of 2,921 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 936.

About ZIP code 77861

The housing stock consists of predominantly single-family detached homes. Much of the housing stock is relatively new, reflecting recent development activity. Median home value is $244,800. Owner-occupancy is high at 86%, well above the national average.

The gap between median ($67,113) and mean household income suggests income inequality — a small number of higher earners pull the average up. 39% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 34 minutes is near the national average.

Educational attainment is near the national average, with 23% of residents holding a bachelor's degree or higher.

Overall, ZIP code 77861 reflects a community defined by high homeownership and a significant Social Security-dependent population.

2,921

population

115.25

sq mi land

Standard

ZIP type

Central (CT)

timezone

77861 ZIP code map

Cities in ZIP code 77861

Below are the cities the US Postal Service accepts for ZIP code 77861. Using any city not on this list may result in mail delivery delays.

City	Status
Iola	Preferred

Nearby ZIP codes

77831 Bedias (9.2 mi) 77830 Anderson (12.6 mi) 77872 North Zulch (14.4 mi) 77802 Bryan (15.2 mi) 77840 College Station (16.6 mi) 77845 College Station (16.8 mi) 77808 Bryan (17 mi) 77801 Bryan (17.8 mi) 77843 College Station (18 mi) 77803 Bryan (18.5 mi)

Demographics updated 06/2026

Population
Total population	2,921
Population density	25 / sq mi
State FIPS	48
County FIPS	185

Geography
Land area	115.25 sq mi
Water area	3.88 sq mi
Latitude	30.7231
Longitude	-96.0782
Timezone	Central (CT)
Area code	936

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	33.5%	43.1%	39.5%
$50k – $100k	34.8%	29.7%	30.1%
$100k – $200k	23.6%	22.4%	22.6%
Over $200k	8.1%	4.9%	7.8%

Demographics & statistics

2,921

Population

People per sq mi

43.1

Median age

$67,113

Median household income

$41,849

Per capita income

$244,800

Median home value

$882

Median monthly rent

85.8%

Home ownership

10.0%

Poverty rate

4.5%

Unemployment

1,145

Housing units

23.3%

Bachelor's or higher

Age distribution

Male Female

Under 5

120

5–9

108

167

10–14

150

118

15–19

106

20–24

103

25–34

152

35–44

136

214

45–54

191

110

55–59

142

60–64

128

216

65–74

194

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	734	25.1%
18 and over	2,187	74.9%
65 and over	540	18.5%
Median age	43.1 years

Race & ethnicity

White 83.2%

Hispanic or Latino 6.3%

Two or more races 6.3%

Other race 2.9%

Black or African American 1.1%

American Indian / Alaska Native 0.2%

Group	Count	%
White	2,593	83.2%
Hispanic or Latino	196	6.3%
Two or more races	195	6.3%
Other race	91	2.9%
Black or African American	35	1.1%
American Indian / Alaska Native	7	0.2%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	33.5%	43.1%	39.5%
$50k – $100k	34.8%	29.7%	30.1%
$100k – $200k	23.6%	22.4%	22.6%
Over $200k	8.1%	4.9%	7.8%

Under $10k 8.3%

$10k–$15k 1.4%

$15k–$25k 8.3%

$25k–$35k 6.9%

$35k–$50k 10.2%

$50k–$75k 18.7%

$75k–$100k 11.4%

$100k–$150k 13.0%

$150k–$200k 13.1%

$200k+ 8.7%

Range	% of households
Under $10k	8.3%
$10k–$15k	1.4%
$15k–$25k	8.3%
$25k–$35k	6.9%
$35k–$50k	10.2%
$50k–$75k	18.7%
$75k–$100k	11.4%
$100k–$150k	13.0%
$150k–$200k	13.1%
$200k+	8.7%
Median income	$67,113

Housing

Home values

Under $50k 8.5%

$50k–$100k 6.1%

$100k–$150k 11.8%

$150k–$200k 13.0%

$200k–$300k 21.5%

$300k–$500k 16.4%

$500k–$1M 18.2%

$1M+ 4.5%

Housing overview

Metric	Value
Median home value	$244,800
Median rent / month	$882
Owner occupied	85.8%
Renter occupied	14.2%
Vacant	16.5%
Single-family detached	73.3%
Large apartment buildings	0.0%
Mobile homes	23.6%
Median rooms	5.9
Avg household size (owned)	2.75

Year built

Era	%
2020 or later	2.5%
2010–2019	26.5%
2000–2009	13.6%
1990–1999	16.6%
1980–1989	16.0%
1970–1979	8.6%
1960–1969	8.2%
1950–1959	3.7%
1940–1949	1.5%
1939 or earlier	2.7%

Bedrooms

Size	% of units
No bedroom (studio)	1.2%
1 bedroom	5.5%
2 bedrooms	26.6%
3 bedrooms	41.3%
4 bedrooms	20.2%
5+ bedrooms	5.1%

Vehicles per household

Vehicles	% of households
No vehicle	1.2%
1 vehicle	25.7%
2 vehicles	47.4%
3 or more	25.7%

Heating fuel

Fuel type	%
Utility gas	2.4%
Electricity	68.8%
Propane / LP gas	23.4%
Wood	4.2%
Solar	1.2%

Households & families

Household type	Count	%
Married-couple family	646	59.5%
Cohabiting couple	17	1.6%
Male householder, no spouse	123	11.3%
Female householder, no spouse	299	27.6%
Households with children under 18	347	32.0%
Households with seniors (65+)	406	37.4%
Average household size	2.69

Marital status

Status	Male	Female
Never married	27.9%	15.5%
Married	61.1%	58.0%
Separated	0.6%	0.2%
Widowed	2.2%	10.7%
Divorced	8.1%	15.6%

Education

Less than 9th grade 0.5%

Some HS, no diploma 11.0%

HS graduate 33.4%

Some college, no degree 20.9%

Associate's degree 10.9%

Bachelor's degree 14.9%

Graduate / professional 8.4%

Metric	%
HS diploma or higher	88.5%
Bachelor's or higher	23.3%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	15	1.8%
Kindergarten	28	3.4%
Elementary school	499	60.7%
High school	184	22.4%
College / grad school	96	11.7%

Employment

Industry of employment

Education & healthcare 21.9%

Construction 18.1%

Agriculture & mining 9.6%

Professional & management 9.4%

Finance & real estate 7.4%

Manufacturing 7.3%

Transportation & utilities 7.3%

Arts, food & hospitality 7.2%

Retail trade 4.7%

Wholesale trade 2.6%

Public administration 2.0%

Other services 1.5%

Information 1.0%

Occupation

Category	%
Management, business & arts	35.0%
Service	7.8%
Sales & office	22.4%
Natural resources & construction	19.5%
Production & transportation	15.2%

Employment type

Type	%
Private sector	76.5%
Government	12.5%
Self-employed	10.9%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	88.1%
Carpool	3.5%
Public transit	0.0%
Walk	0.8%
Work from home	4.0%
Other means	3.6%
Avg commute (minutes)	33.7

Poverty

All people 10.0%

Under 18 years 10.6%

18 and over 9.8%

Married-couple families 2.9%

Female-led households 25.2%

Income support

Source	% of households
Social Security	39.4%
Retirement income	30.2%
Supplemental Security	9.8%
Cash public assistance	3.3%
Food stamps / SNAP	5.0%

Health indicators

Condition	%
Obesity	35.4%
High blood pressure	35.9%
High cholesterol	37.5%
Diabetes	11.3%
Heart disease	7.1%
Stroke	3.1%
Asthma	9.1%
Arthritis	25.4%
Kidney disease	3.0%
Pulmonary disease	7.6%
Cancer	6.9%

Behavior / access	%
Smoking	19.4%
Binge drinking	18.8%
No physical activity	23.8%
Less than 7 hrs sleep	33.4%
Depression	23.1%
Fair or poor health	16.1%
Poor mental health	15.4%
Poor physical health	11.6%
No health insurance	21.7%
Visited doctor (checkup)	71.7%
Visited dentist	56.6%
Cholesterol screening	89.7%
Teeth loss	14.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	162	7.4%

Disability	%
Any disability	17.3%
Under 18	3.3%
18–64 years	17.7%
65 and over	35.2%

Health insurance coverage

Type	%
Private insurance	76.2%
Public insurance	30.4%
No insurance	10.4%
Uninsured under 19	6.5%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	2,834	97.0%
Spanish	28	1.0%
Other Indo-European	28	1.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	2,875	98.4%
Born in same state	2,875	98.4%
Born in different state	2,250	77.0%
Foreign born	0	0.0%
Naturalized citizen	46	1.6%
Not a US citizen	35	76.1%

Ancestry

Ancestry	Count	%
Italian	299	10.2%
Arab	194	6.6%
French	168	5.8%
English	74	2.5%

Ancestry	Count	%
Polish	42	1.4%
German	25	0.9%
Dutch	1	0%

Technology access

Metric	% of households
Computer access	37.1%
Internet access	93.8%

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

Frequently asked questions about ZIP code 77861

What city is ZIP code 77861 in?

ZIP code 77861 is primarily assigned to Iola, Texas.

What county is ZIP code 77861 in?

ZIP code 77861 falls within Grimes County, Texas.

Is ZIP code 77861 mostly owner-occupied?

86% of occupied units in ZIP code 77861 are owner-occupied, well above the national average.

Does ZIP code 77861 have a large retiree population?

39% of households in ZIP code 77861 receive Social Security income, suggesting a significant retiree or disability population.

What is the population of ZIP code 77861?

ZIP code 77861 has an estimated population of 2,921 residents, with a density of 25 people per square mile.

What is the median household income in ZIP code 77861?

The median household income in ZIP code 77861 is $67,113, below the national median of ~$75,000.

What timezone is ZIP code 77861 in?

ZIP code 77861 observes the CST timezone.