Diamond ZIP Code List — Newton County, MO

There is one unique ZIP code in Diamond, Missouri and it is 64840. Area code: 417.

ZIP codes

52.02

sq mi land

0.10

sq mi water

417

area code

Diamond, MO ZIP code map

About Diamond, MO

Diamond, Missouri, is a charming small city nestled in the heart of Newton County. Known for its close-knit community and rural charm, it plays a role in the scenic landscape of southwestern Missouri. With a ZIP code of 64840, Diamond serves as a quiet retreat for those seeking a slower pace of life.

Location & geography

Located approximately 10 miles northeast of Joplin and about 12 miles west of Neosho, Diamond lies comfortably amidst rolling hills and lush farmland. The city covers a total area of 52.02 square miles, complemented by a water area of 0.10 square miles. The surrounding terrain makes the area ideal for outdoor activities and contributes to its picturesque ambiance.

Community & economy

The character of Diamond is defined by its friendly residents and a strong sense of community. Local industries primarily include agriculture, small businesses, and retail, which support the daily lives of its citizens. Residents enjoy a peaceful lifestyle, with community events and gatherings that foster connections among neighbors.

Transportation

Diamond is conveniently located near several major highways, including U.S. Route 59, which facilitates travel to nearby towns and cities. The nearest airport is the Joplin Regional Airport, which is about 15 miles away, providing additional connectivity for both leisure and business travel. Public transportation options are limited, emphasizing the city's small-town nature.

History

Diamond was founded in the late 19th century and has grown from its agricultural roots into a community that balances tradition and modernity. Key industries in the area historically revolved around farming and small-scale manufacturing, which have shaped the local economy. Over the years, notable events have included community fairs and festivities that celebrate local culture and heritage.

Did you know?

A little-known fact about Diamond, MO, is that it is home to the famous 'Shoal Creek,' which provides opportunities for fishing and outdoor recreation. Additionally, the city maintains a unique blend of rural charm and modern amenities, making it an attractive destination for visitors looking to explore southwestern Missouri.

ZIP codes for Diamond, MO (1)

ZIP code	City	County	Map
64840	Diamond	Newton	View map

Demographics & statistics

3,456

Population

37.4

Median age

$63,720

Median household income

$27,968

Per capita income

$155,300

Median home value

$596

Median monthly rent

76.8%

Home ownership

6.1%

Poverty rate

3.3%

Unemployment

1,026

Housing units

24.8%

Bachelor's or higher

Age distribution

Male Female

139

Under 5

156

169

5–9

190

10–14

15–19

20–24

289

25–34

323

125

35–44

141

157

45–54

175

111

55–59

124

100

60–64

112

164

65–74

183

180

75–84

202

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	899	26.0%
18 and over	2,557	74.0%
65 and over	755	21.8%
Median age	37.4 years

Race & ethnicity

White 92.2%

American Indian / Alaska Native 2.6%

Two or more races 2%

Hispanic or Latino 1.9%

Other race 0.7%

Black or African American 0.3%

Native Hawaiian / Pacific Islander 0.2%

Group	Count	%
White	3,247	92.2%
American Indian / Alaska Native	93	2.6%
Two or more races	72	2%
Hispanic or Latino	66	1.9%
Other race	26	0.7%
Black or African American	10	0.3%
Native Hawaiian / Pacific Islander	8	0.2%

Household income

Under $10k 2.1%

$10k–$15k 2.5%

$15k–$25k 4.6%

$25k–$35k 6.9%

$35k–$50k 21.2%

$50k–$75k 24.9%

$75k–$100k 12.0%

$100k–$150k 17.3%

$150k–$200k 5.1%

$200k+ 3.4%

Range	% of households
Under $10k	2.1%
$10k–$15k	2.5%
$15k–$25k	4.6%
$25k–$35k	6.9%
$35k–$50k	21.2%
$50k–$75k	24.9%
$75k–$100k	12.0%
$100k–$150k	17.3%
$150k–$200k	5.1%
$200k+	3.4%
Median income	$63,720

Housing

Home values

Under $50k 6.9%

$50k–$100k 15.8%

$100k–$150k 25.9%

$150k–$200k 9.0%

$200k–$300k 27.3%

$300k–$500k 10.2%

$500k–$1M 2.9%

$1M+ 2.0%

Housing overview

Metric	Value
Median home value	$155,300
Median rent / month	$596
Owner occupied	76.8%
Renter occupied	23.2%
Vacant	5.1%
Single-family detached	78.9%
Large apartment buildings	0.0%
Mobile homes	20.6%
Median rooms	6.3
Avg household size (owned)	2.69

Year built

Era	%
2020 or later	0.2%
2010–2019	6.8%
2000–2009	19.4%
1990–1999	25.9%
1980–1989	5.1%
1970–1979	17.8%
1960–1969	4.3%
1950–1959	6.2%
1940–1949	2.5%
1939 or earlier	11.8%

Bedrooms

Size	% of units
No bedroom (studio)	1.3%
1 bedroom	3.0%
2 bedrooms	21.7%
3 bedrooms	50.3%
4 bedrooms	14.8%
5+ bedrooms	9.0%

Vehicles per household

Vehicles	% of households
No vehicle	4.1%
1 vehicle	25.2%
2 vehicles	33.0%
3 or more	37.7%

Heating fuel

Fuel type	%
Utility gas	18.7%
Electricity	48.2%
Propane / LP gas	21.6%
Wood	11.5%

Households & families

Household type	Count	%
Married-couple family	838	67.1%
Cohabiting couple	28	2.2%
Male householder, no spouse	145	11.6%
Female householder, no spouse	237	19.0%
Households with children under 18	411	32.9%
Households with seniors (65+)	480	38.5%
Average household size	2.77

Marital status

Status	Male	Female
Never married	14.3%	15.7%
Married	70.3%	60.4%
Separated	1.4%	0.9%
Widowed	2.3%	9.3%
Divorced	11.6%	13.8%

Education

Less than 9th grade 3.0%

Some HS, no diploma 5.8%

HS graduate 28.4%

Some college, no degree 26.4%

Associate's degree 11.7%

Bachelor's degree 20.0%

Graduate / professional 4.8%

Metric	%
HS diploma or higher	91.2%
Bachelor's or higher	24.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	44	5.6%
Kindergarten	129	16.3%
Elementary school	393	49.7%
High school	72	9.1%
College / grad school	152	19.2%

Employment

Industry of employment

Education & healthcare 20.6%

Manufacturing 20.2%

Transportation & utilities 15.3%

Professional & management 9.4%

Retail trade 8.7%

Finance & real estate 4.4%

Construction 4.3%

Wholesale trade 4.1%

Arts, food & hospitality 3.9%

Other services 3.8%

Public administration 3.0%

Agriculture & mining 2.1%

Occupation

Category	%
Management, business & arts	34.2%
Service	10.1%
Sales & office	23.8%
Natural resources & construction	10.3%
Production & transportation	21.6%

Employment type

Type	%
Private sector	84.8%
Government	6.8%
Self-employed	8.4%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	83.1%
Carpool	8.0%
Public transit	0.0%
Walk	0.2%
Other means	2.6%
Avg commute (minutes)	25.0

Poverty

All people 6.1%

Under 18 years 6.4%

18 and over 6.0%

Married-couple families 6.4%

Female-led households 15.4%

Income support

Source	% of households
Social Security	41.5%
Retirement income	32.5%
Supplemental Security	4.0%
Cash public assistance	0.1%
Food stamps / SNAP	7.8%

Health indicators

Condition	%
High blood pressure	30.8%
High cholesterol	34.1%
Heart disease	6.8%
Stroke	3.0%
Asthma	9.2%
Arthritis	26.5%
Kidney disease	2.7%
Pulmonary disease	8.0%
Cancer	6.9%

Behavior / access	%
Binge drinking	17.6%
No physical activity	24.8%
Less than 7 hrs sleep	32.4%
Fair or poor health	15.2%
Poor mental health	15.4%
Poor physical health	11.3%
No health insurance	15.6%
Visited doctor (checkup)	73.3%
Visited dentist	60.7%
Cholesterol screening	88.6%
Teeth loss	16.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	247	9.7%

Disability	%
Any disability	10.4%
Under 18	0.9%
18–64 years	10.1%
65 and over	22.5%

Health insurance coverage

Type	%
Private insurance	71.2%
Public insurance	37.3%
Uninsured under 19	8.1%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	3,161	91.5%
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)	3,448	99.8%
Born in same state	3,314	95.9%
Born in different state	2,313	66.9%
Foreign born	134	3.9%
Naturalized citizen	8	0.2%
Not a US citizen	5	62.5%

Ancestry

Ancestry	Count	%
French	506	14.6%
Arab	146	4.2%
Italian	135	3.9%
English	86	2.5%

Ancestry	Count	%
Dutch	81	2.3%
Polish	19	0.5%
German	9	0.3%

Technology access

Metric	% of households
Computer access	36.1%
Internet access	93.8%

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

Frequently asked questions

What is the ZIP code for Diamond, MO?

Diamond, MO has one ZIP code: 64840.

What is the main ZIP code for Diamond, MO?

The primary ZIP code for Diamond, MO is 64840. The city uses area code 417 for phone service.

What county is Diamond, MO in?

Diamond is located in Newton County, Missouri.

How many ZIP codes are in Diamond, MO?

Diamond, MO has 1 ZIP code.

What ZIP code should I use for mail addressed to the Diamond R Ranch area in Diamond, MO?

Mail to the Diamond R Ranch and surrounding rural areas of Diamond, Missouri should use ZIP code 64840, which is the sole ZIP code serving Diamond in Newton County.

What is the ZIP code for the downtown Diamond, MO area near Main Street?

The downtown Diamond area, including businesses and residences near Main Street, uses ZIP code 64840, the only ZIP code that serves the entire city of Diamond.