Mills ZIP Code List — Harding County, NM

There is one unique ZIP code in Mills, New Mexico and it is 87730. Area code: 575.

ZIP codes

307.57

sq mi land

0.12

sq mi water

575

area code

Mills, NM ZIP code map

About Mills, NM

Mills is a small community located in Harding County, New Mexico, known for its serene landscapes and rural charm. With a ZIP code designation of 87730, this quiet town embodies the spirit of southwestern America. Residents enjoy a close-knit community atmosphere set against the scenic backdrop of New Mexico's diverse terrain.

Location & geography

Mills is situated in the northeastern part of New Mexico, surrounded by vast expanses of land. Nearby cities include Roy, approximately 25 miles to the southwest, Mosquero, situated about 18 miles further south, and the historical town of Tucumcari, which is around 60 miles to the southeast. The area covers 307.57 square miles of land and has a water area of 0.12 square miles, providing a stark contrast to the dry, rugged terrain of the region.

Community & economy

The community of Mills is characterized by its friendly residents and a slow-paced lifestyle that offers a unique quality of life. The local economy is primarily supported by agriculture and ranching, reflecting the traditional industries of rural New Mexico. Daily life here is marked by a strong sense of community and connection to the land, making it a peaceful retreat for those who appreciate open spaces.

Transportation

Mills is accessible via New Mexico State Road 39, which connects the town to neighboring communities and essential services. The nearest major airport is the Tucumcari Municipal Airport, located approximately 60 miles southeast, providing regional access. Public transportation options are limited, emphasizing the importance of personal vehicles for travel in this rural setting.

History

Mills was founded as part of the broader development of Harding County during the late 19th century, primarily as an agricultural community. Key industries have historically involved ranching and farming, which remain vital to its economy today. Over the years, Mills has retained its small-town character, with notable events and celebrations that reflect its cultural heritage.

Did you know?

A little-known fact about Mills, NM, is that despite its small size, it is part of the scenic landscape that attracts outdoor enthusiasts interested in hiking and wildlife watching. Additionally, Mills is a reminder of the rich history and traditions of New Mexico's rural communities.

ZIP codes for Mills, NM (1)

ZIP code	City	County	Map
87730	Mills	Harding	View map

Demographics & statistics

Population

67.3

Median age

$250,001

Median household income

$223,207

Per capita income

Median home value

Median monthly rent

100.0%

Home ownership

7.1%

Poverty rate

0.0%

Unemployment

Housing units

71.4%

Bachelor's or higher

Age distribution

Male Female

55–59

60–64

65–74

75–84

← Male

Female →

Age summary

Group	Count	%
Under 18	0	0.0%
18 and over	14	100.0%
65 and over	12	85.7%
Median age	67.3 years

Race & ethnicity

White 75%

Hispanic or Latino 12.5%

Two or more races 12.5%

Group	Count	%
White	12	75%
Hispanic or Latino	2	12.5%
Two or more races	2	12.5%

Household income

$15k–$25k 14.3%

$50k–$75k 14.3%

$100k–$150k 14.3%

$200k+ 57.1%

Range	% of households
$15k–$25k	14.3%
$50k–$75k	14.3%
$100k–$150k	14.3%
$200k+	57.1%
Median income	$250,001

Housing

Home values

Under $50k 14.3%

$50k–$100k 28.6%

$100k–$150k 14.3%

$150k–$200k 14.3%

$500k–$1M 28.6%

Housing overview

Metric	Value
Median home value	$0
Median rent / month	$0
Owner occupied	100.0%
Renter occupied	0.0%
Vacant	53.3%
Single-family detached	93.3%
Large apartment buildings	0.0%
Mobile homes	6.7%
Median rooms	6.3
Avg household size (owned)	2.00

Year built

Era	%
2020 or later	0.0%
2010–2019	13.3%
2000–2009	0.0%
1990–1999	13.3%
1980–1989	6.7%
1970–1979	0.0%
1960–1969	26.7%
1950–1959	0.0%
1940–1949	20.0%
1939 or earlier	20.0%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	0.0%
2 bedrooms	6.7%
3 bedrooms	73.3%
4 bedrooms	20.0%
5+ bedrooms	0.0%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	0.0%
2 vehicles	14.3%
3 or more	85.7%

Heating fuel

Fuel type	%
Electricity	14.3%
Propane / LP gas	71.4%
Wood	14.3%

Households & families

Household type	Count	%
Married-couple family	4	57.1%
Cohabiting couple	2	28.6%
Male householder, no spouse	0	0.0%
Female householder, no spouse	1	14.3%
Households with children under 18	0	0.0%
Households with seniors (65+)	7	100.0%
Average household size	2.00

Marital status

Status	Male	Female
Never married	0.0%	0.0%
Married	66.7%	75.0%
Separated	0.0%	0.0%
Widowed	0.0%	25.0%
Divorced	33.3%	0.0%

Education

Less than 9th grade 0.0%

Some HS, no diploma 0.0%

HS graduate 21.4%

Some college, no degree 0.0%

Associate's degree 7.1%

Bachelor's degree 35.7%

Graduate / professional 35.7%

Metric	%
HS diploma or higher	100.0%
Bachelor's or higher	71.4%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	0	0.0%
Elementary school	0	0.0%
High school	0	0.0%
College / grad school	0	0.0%

Employment

Industry of employment

Agriculture & mining 100.0%

Occupation

Category	%
Management, business & arts	100.0%
Service	0.0%
Sales & office	0.0%
Natural resources & construction	0.0%
Production & transportation	0.0%

Employment type

Type	%
Private sector	0.0%
Government	0.0%
Self-employed	100.0%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	0.0%
Carpool	100.0%
Public transit	0.0%
Walk	0.0%
Other means	0.0%
Avg commute (minutes)	0.0

Poverty

All people 7.1%

Under 18 years 0.0%

18 and over 7.1%

Married-couple families 0.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	100.0%
Retirement income	85.7%
Supplemental Security	0.0%
Cash public assistance	0.0%
Food stamps / SNAP	0.0%

Health indicators

Condition	%
High blood pressure	0.0%
High cholesterol	0.0%
Heart disease	0.0%
Stroke	0.0%
Asthma	0.0%
Arthritis	0.0%
Kidney disease	0.0%
Pulmonary disease	0.0%
Cancer	0.0%

Behavior / access	%
Binge drinking	0.0%
No physical activity	0.0%
Less than 7 hrs sleep	0.0%
Fair or poor health	0.0%
Poor mental health	0.0%
Poor physical health	0.0%
No health insurance	0.0%
Visited doctor (checkup)	0.0%
Visited dentist	0.0%
Cholesterol screening	0.0%
Teeth loss	0.0%

Veterans & disability

Veterans	Count	%
Civilian veterans	1	7.1%

Disability	%
Any disability	21.4%
Under 18	0.0%
18–64 years	0.0%
65 and over	25.0%

Health insurance coverage

Type	%
Private insurance	92.9%
Public insurance	85.7%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	14	100.0%
Spanish	0	0.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	14	100.0%
Born in same state	14	100.0%
Born in different state	7	50.0%
Foreign born	0	0.0%
Naturalized citizen	0	0.0%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
French	2	14.3%

Ancestry	Count	%
German	1	7.1%

Technology access

Metric	% of households
Computer access	50.0%
Internet access	100.0%

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

Frequently asked questions

What is the ZIP code for Mills, NM?

Mills, NM has one ZIP code: 87730.

What is the main ZIP code for Mills, NM?

The primary ZIP code for Mills, NM is 87730. The city uses area code 575 for phone service.

What county is Mills, NM in?

Mills is located in Harding County, New Mexico.

How many ZIP codes are in Mills, NM?

Mills, NM has 1 ZIP code.

What is the ZIP code for Mills, New Mexico in Harding County?

Mills, New Mexico uses the ZIP code 87730, which serves this small community located in Harding County in the northeastern part of the state.

If I'm mailing a letter to a business in Mills, NM, what ZIP code should I use?

You should use ZIP code 87730 for any mailing addresses in Mills, New Mexico, as this is the only ZIP code designated for the city.