64840 ZIP Code — Diamond, MO

Newton County, Missouri

ZIP code 64840 is located in Diamond, Missouri, within Newton County. It covers approximately 52.02 square miles and serves a population of 3,456 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 417.

About ZIP code 64840

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1990s, giving the area an established character. Median home value is $155,300. Owner-occupancy is high at 77%, well above the national average.

Median household income is $63,720. The poverty rate of 6% is below the national average. 42% 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 25 minutes is near the national average.

Educational attainment is near the national average, with 25% of residents holding a bachelor's degree or higher.

Health indicators show elevated rates of smoking (21%) compared to national benchmarks.

Overall, ZIP code 64840 reflects a community defined by high homeownership and a significant Social Security-dependent population.

3,456

population

52.02

sq mi land

Standard

ZIP type

Central (CT)

timezone

64840 ZIP code map

Cities in ZIP code 64840

Below are the cities the US Postal Service accepts for ZIP code 64840. Using any city not on this list may result in mail delivery delays.

City	Status
Diamond	Preferred

Nearby ZIP codes

64844 Granby (8.8 mi) 64804 Joplin (9.8 mi) 64835 Carterville (10.7 mi) 64836 Carthage (11 mi) 64850 Neosho (11.7 mi) 64801 Joplin (12 mi) 64859 Reeds (13.1 mi) 64862 Sarcoxie (13.7 mi) 65723 Pierce City (13.8 mi) 64870 Webb City (14.2 mi) 64866 Stark City (14.4 mi) 64865 Seneca (16.4 mi)

Demographics updated 05/2026

Population
Total population	3,456
Population density	66 / sq mi
State FIPS	29
County FIPS	145

Geography
Land area	52.02 sq mi
Water area	0.10 sq mi
Latitude	37.0240
Longitude	-94.3150
Timezone	Central (CT)
Area code	417

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	41.9%	51.0%	43.8%
$50k – $100k	36.0%	34.2%	31.5%
$100k – $200k	20.1%	11.7%	19.5%
Over $200k	1.9%	3.1%	5.2%

Demographics & statistics

3,456

Population

People per sq mi

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

Income range	This ZIP	County avg	State avg
Under $50k	41.9%	51.0%	43.8%
$50k – $100k	36.0%	34.2%	31.5%
$100k – $200k	20.1%	11.7%	19.5%
Over $200k	1.9%	3.1%	5.2%

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%
Work from home	6.1%
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	%
Obesity	33.6%
High blood pressure	30.8%
High cholesterol	34.1%
Diabetes	10.2%
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	%
Smoking	20.7%
Binge drinking	17.6%
No physical activity	24.8%
Less than 7 hrs sleep	32.4%
Depression	24.1%
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%
No insurance	9.1%
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 about ZIP code 64840

What city is ZIP code 64840 in?

ZIP code 64840 is primarily assigned to Diamond, Missouri.

What county is ZIP code 64840 in?

ZIP code 64840 falls within Newton County, Missouri.

Does ZIP code 64840 have a large retiree population?

42% of households in ZIP code 64840 receive Social Security income, suggesting a significant retiree or disability population.

Does ZIP code 64840 have a large veteran population?

10% of civilians in ZIP code 64840 are veterans, above the national average of ~7%.

What is the typical home value in ZIP code 64840?

The median home value in ZIP code 64840 is $155,300.

What is the population of ZIP code 64840?

ZIP code 64840 has an estimated population of 3,456 residents, with a density of 66 people per square mile.

What timezone is ZIP code 64840 in?

ZIP code 64840 observes the CST timezone.