Iliff ZIP Codes — Logan County, CO

There is one unique ZIP code in Iliff, Colorado and it is 80736. Area code: 970.

ZIP codes

132.65

sq mi land

0.07

sq mi water

970

area code

Iliff, CO ZIP code map

About Iliff, CO

Iliff, Colorado, is a charming small town located in Logan County. Known for its rural character and close-knit community, Iliff offers a unique glimpse into the life of Eastern Colorado. With its picturesque landscapes and genuine hospitality, it’s a welcoming place for both residents and visitors alike.

Location & geography

Iliff is situated in the northeastern part of Colorado, approximately 16 miles southwest of the city of Sterling and about 19 miles northeast of the larger town of Sterling. The town covers a total land area of 132.65 square miles, with a negligible water area of 0.07 square miles. The terrain is primarily flat, characteristic of the High Plains region, with sweeping views of the surrounding countryside.

Community & economy

The community of Iliff prides itself on its agricultural roots, with farming and ranching playing a significant role in local industries. Residents enjoy a lifestyle that emphasizes outdoor activities and a strong sense of community, often coming together for local events and gatherings. Daily life in Iliff revolves around family values, with many residents participating in community service and local organizations.

Transportation

Iliff is accessible via State Highway 6, which connects it to nearby towns and major routes. The nearest major airport is the Sterling Municipal Airport, located just a short drive away from Iliff. Public transportation options are limited, so most residents rely on personal vehicles for commuting.

History

Iliff was founded in the late 19th century, originally serving as a hub for agricultural activity in the region. Over the years, it has maintained its focus on farming and ranching as key industries that sustain the local economy. Notable events in the town's history include the establishment of the local school system, which has been a cornerstone of the community.

Did you know?

A little-known fact about Iliff is that it features a unique mix of historical architecture, showcasing the town’s rich past. Additionally, the vast expanses surrounding the town offer incredible opportunities for wildlife watching and outdoor recreation.

ZIP codes for Iliff, CO (1)

ZIP code	City	County	Map
80736	Iliff	Logan	View map

Demographics & statistics

553

Population

42.2

Median age

$73,523

Median household income

$29,538

Per capita income

$139,800

Median home value

$1,153

Median monthly rent

83.5%

Home ownership

19.9%

Poverty rate

9.1%

Unemployment

210

Housing units

21.7%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

45–54

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	117	21.2%
18 and over	436	78.8%
65 and over	78	14.1%
Median age	42.2 years

Race & ethnicity

White 81.5%

Hispanic or Latino 8.9%

Other race 4.9%

Two or more races 4%

Black or African American 0.7%

Group	Count	%
White	495	81.5%
Hispanic or Latino	54	8.9%
Other race	30	4.9%
Two or more races	24	4%
Black or African American	4	0.7%

Household income

$10k–$15k 3.5%

$15k–$25k 4.3%

$25k–$35k 12.6%

$35k–$50k 15.2%

$50k–$75k 20.0%

$75k–$100k 18.7%

$100k–$150k 22.2%

$150k–$200k 3.5%

Range	% of households
$10k–$15k	3.5%
$15k–$25k	4.3%
$25k–$35k	12.6%
$35k–$50k	15.2%
$50k–$75k	20.0%
$75k–$100k	18.7%
$100k–$150k	22.2%
$150k–$200k	3.5%
Median income	$73,523

Housing

Home values

Under $50k 4.7%

$50k–$100k 27.1%

$100k–$150k 27.6%

$150k–$200k 10.9%

$200k–$300k 9.9%

$300k–$500k 18.2%

$500k–$1M 1.6%

Housing overview

Metric	Value
Median home value	$139,800
Median rent / month	$1,153
Owner occupied	83.5%
Renter occupied	16.5%
Vacant	7.3%
Single-family detached	66.9%
Large apartment buildings	0.0%
Mobile homes	29.8%
Median rooms	5.3
Avg household size (owned)	2.27

Year built

Era	%
2020 or later	1.6%
2010–2019	4.0%
2000–2009	14.5%
1990–1999	19.0%
1980–1989	8.9%
1970–1979	7.3%
1960–1969	16.1%
1950–1959	7.7%
1940–1949	5.6%
1939 or earlier	15.3%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	4.8%
2 bedrooms	27.4%
3 bedrooms	55.2%
4 bedrooms	10.1%
5+ bedrooms	2.4%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	15.7%
2 vehicles	25.2%
3 or more	59.1%

Heating fuel

Fuel type	%
Utility gas	60.0%
Electricity	8.3%
Propane / LP gas	31.7%

Households & families

Household type	Count	%
Married-couple family	147	63.9%
Cohabiting couple	19	8.3%
Male householder, no spouse	48	20.9%
Female householder, no spouse	16	7.0%
Households with children under 18	65	28.3%
Households with seniors (65+)	51	22.2%
Average household size	2.40

Marital status

Status	Male	Female
Never married	18.8%	27.2%
Married	61.2%	57.1%
Separated	2.4%	3.1%
Widowed	2.0%	5.4%
Divorced	15.6%	7.1%

Education

Less than 9th grade 3.6%

Some HS, no diploma 3.0%

HS graduate 33.0%

Some college, no degree 29.1%

Associate's degree 9.6%

Bachelor's degree 15.9%

Graduate / professional 5.8%

Metric	%
HS diploma or higher	93.4%
Bachelor's or higher	21.7%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	0	0.0%
Elementary school	53	38.4%
High school	57	41.3%
College / grad school	28	20.3%

Employment

Industry of employment

Agriculture & mining 27.6%

Education & healthcare 26.2%

Construction 9.7%

Professional & management 6.5%

Retail trade 5.7%

Other services 5.7%

Transportation & utilities 5.4%

Arts, food & hospitality 3.2%

Manufacturing 2.9%

Wholesale trade 2.9%

Information 2.2%

Public administration 1.4%

Finance & real estate 0.7%

Occupation

Category	%
Management, business & arts	42.3%
Service	19.7%
Sales & office	8.6%
Natural resources & construction	22.6%
Production & transportation	6.8%

Employment type

Type	%
Private sector	63.4%
Government	24.7%
Self-employed	11.8%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	84.6%
Carpool	4.3%
Public transit	2.2%
Walk	0.0%
Other means	0.4%
Avg commute (minutes)	24.8

Poverty

All people 19.9%

Under 18 years 41.9%

18 and over 14.0%

Married-couple families 13.6%

Female-led households 34.8%

Income support

Source	% of households
Social Security	21.7%
Retirement income	16.5%
Supplemental Security	3.9%
Cash public assistance	3.9%
Food stamps / SNAP	14.3%

Health indicators

Condition	%
High blood pressure	30.7%
High cholesterol	31.6%
Heart disease	6.9%
Stroke	3.3%
Asthma	10.2%
Arthritis	26.2%
Kidney disease	3.1%
Pulmonary disease	7.6%
Cancer	7.3%

Behavior / access	%
Binge drinking	18.4%
No physical activity	21.7%
Less than 7 hrs sleep	31.5%
Fair or poor health	13.5%
Poor mental health	14.6%
Poor physical health	11.1%
No health insurance	13.4%
Visited doctor (checkup)	66.9%
Visited dentist	60.3%
Cholesterol screening	90.1%
Teeth loss	13.5%

Veterans & disability

Veterans	Count	%
Civilian veterans	33	7.6%

Disability	%
Any disability	15.7%
Under 18	9.4%
18–64 years	11.2%
65 and over	46.2%

Health insurance coverage

Type	%
Private insurance	57.1%
Public insurance	43.0%
Uninsured under 19	11.5%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	532	96.2%
Spanish	5	0.9%
Other Indo-European	5	0.9%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	539	97.5%
Born in same state	533	96.4%
Born in different state	367	66.4%
Foreign born	6	1.1%
Naturalized citizen	14	2.5%
Not a US citizen	14	100.0%

Ancestry

Ancestry	Count	%
French	49	8.9%
Italian	26	4.7%

Ancestry	Count	%
Arab	16	2.9%
Polish	2	0.4%

Technology access

Metric	% of households
Computer access	41.6%
Internet access	99.6%

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

Frequently asked questions

What ZIP codes does Iliff, CO have?

Iliff, CO has one ZIP code: 80736. Each ZIP code serves a distinct delivery area within the city and surrounding region.