Postal Codes

64840 ZIP Code

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ZIP code 64840 covers Diamond, Missouri, with a population of about 3,566 and a median household income of $65,912.

Population
3,56669 per square mile
Median age
39.81.1 points above the US average
Median household income
$65,912about the Missouri median
Poverty rate
9.7%2.7 points below the US average
Typical home value
$251,674up 34.3% in five years
Median rent
$71528% below the Missouri median
Degree or higher
22.3%12.7 points below the US average
Homeownership
76.6%11.6 points above the US average
Time zone
Central UTC-06:00observes daylight saving time
Businesses
42

Where 64840 is

Diamond, Missouri — the area the Census Bureau draws for this ZIP code. ZIP codes are sets of delivery routes rather than areas, so this is the Census approximation of one, not a Postal Service boundary.

People and households

American Community Survey 2019–2023 five-year estimates

Population3,566
Median age39.8
Family households82.7%
Born outside the US2.1%
Speaks a language other than English at home6.3%
White (non-Hispanic)85.1%
Black (non-Hispanic)0.2%
Asian (non-Hispanic)0%
Hispanic or Latino9.2%
Veterans7.9%
Population by age
MaleFemale0-45-910-1415-1920-2425-3435-4445-5455-6465-7475-8485+
Income and poverty

American Community Survey 2019–2023 five-year estimates

Median household income$65,912
Income per person$32,813
Poverty rate9.7%
Households on SNAP or cash assistance16.9%

Household income distribution

Under $10k1.9%
$10–15k0.9%
$15–20k1.4%
$20–25k2.5%
$25–30k7.7%
$30–35k4.0%
$35–40k9.8%
$40–45k1.3%
$45–50k0.6%
$50–60k13.3%
$60–75k11.3%
$75–100k18.5%
$100–125k7.8%
$125–150k6.4%
$150–200k4.6%
$200k or more8.0%

Income as declared to the IRS

Filed returns rather than survey responses, so this counts tax units and not households.

Tax returns filed1,240
Mean adjusted gross income$59,571
Returns declaring $200,000 or more2.4%
Returns, under $25k28.2%
Returns, $25k–$50k28.2%
Returns, $50k–$75k17.7%
Returns, $75k–$100k11.3%
Returns, $100k–$200k12.1%
Returns, $200k or more2.4%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$215,200
Median gross rent$715
Rent as a share of household income18.1%
Owner-occupied76.6%
Vacant homes6%
Median year built1992

What the homes are

Detached house79.2%
2 to 4 units0.6%
Mobile home20.2%
Home values and rents today

Zillow Home Value Index and Zillow Observed Rent Index, courtesy of Zillow. Monthly and current, where the Census figures above are a five-year average and are capped at $2,000,000.

Typical home value$251,674as of 2026-07
Typical home value, 1 yearup 4.9%
Typical home value, 5 yearsup 34.3%
Typical home value, 10 yearsup 127.3%
Typical home value since 2000
201420202026$251,674$98,413

$98,413 in 2014 to $251,674 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate3.3%
Bachelor's degree or higher22.3%
High school diploma or higher87.3%
Works from home2.1%
Drives to work alone85%
Takes public transport0%
Commutes 45 minutes or more10.8%
Health

CDC PLACES 2025 release, model-based estimates. These are modelled small-area estimates for adults, not counts of diagnosed cases.

Obesity38.4% 5 pts above the national average of 33.4%
Diagnosed diabetes13.2% 1.2 pts above the national average of 12%
Currently smokes18% 4.8 pts above the national average of 13.2%
High blood pressure38.7% 4.6 pts above the national average of 34.1%
Fair or poor general health22.3% 2 pts above the national average of 20.3%
No health insurance (18–64)8.9% 2.4 pts below the national average of 11.3%
Depression25.7% 3.8 pts above the national average of 21.9%
No leisure-time physical activity30.9% 5.5 pts above the national average of 25.4%
Arthritis32.3% 7.2 pts above the national average of 25.1%
Binge drinking15.2% 0.8 pts below the national average of 16%
Taking blood pressure medication78.6% 3.9 pts above the national average of 74.7%
Cancer (non-skin)9.6% 1.9 pts above the national average of 7.7%
Current asthma11% 0.6 pts above the national average of 10.4%
Coronary heart disease8% 1.8 pts above the national average of 6.2%
Routine check-up in past year78.7% 2 pts above the national average of 76.7%
Cholesterol screening83.9% 2 pts below the national average of 85.9%
Cognitive disability18.7% 3.9 pts above the national average of 14.8%
Colorectal screening63.7% 0.6 pts below the national average of 64.3%
COPD9.7% 3.1 pts above the national average of 6.6%
Visited a dentist61.3% same as the national average of 61.3%
Any disability38.6% 7.9 pts above the national average of 30.7%
Lacks emotional support19.8% 5 pts below the national average of 24.8%
Food insecurity13.9% 3.2 pts below the national average of 17.1%
Received food stamps10.9% 3.4 pts below the national average of 14.3%
Hearing disability9.8% 3.1 pts above the national average of 6.7%
High cholesterol39.2% 3 pts above the national average of 36.2%
Housing insecurity11.6% 2.2 pts below the national average of 13.8%
Independent living disability10.3% 1.9 pts above the national average of 8.4%
Lacks transport8.6% 0.6 pts below the national average of 9.2%
Loneliness30.4% 4 pts below the national average of 34.4%
Mammography use72.8% 3.1 pts below the national average of 75.9%
Poor mental health (14+ days)18.5% 1.7 pts above the national average of 16.8%
Mobility disability18% 4 pts above the national average of 14%
Poor physical health (14+ days)16% 2.5 pts above the national average of 13.5%
Self-care disability4.5% 0.5 pts above the national average of 4%
Utility shut-off threat8.6% same as the national average of 8.8%
Sleeps under 7 hours36.7% same as the national average of 36.4%
Stroke4.2% 0.8 pts above the national average of 3.4%
All natural teeth lost14.9% 1.9 pts above the national average of 13%
Vision disability5.6% same as the national average of 5.6%
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Business and employment

Census ZIP Code Business Patterns 2022

Business establishments42
People employed224
Annual payroll$7,939,000
Natural hazard risk

FEMA National Risk Index, estimated for this ZIP code from census tract data — the NRI is not published per ZIP.

Overall riskHigher than 80.6% of US census tracts
FEMA ratingRelatively Moderate to Relatively High across the 4 census tracts this ZIP code covers
Expected annual loss74.2 out of 100
Community resilience30.3 out of 100

By hazard

Score is out of 100 and is the area-weighted average across the census tracts this ZIP code covers. The rating beside it is the highest any one of those tracts carries.

Ice storm98.3Very High at its worst in this ZIP code
Drought95.4Relatively Moderate at its worst in this ZIP code
Tornado93.7Very High at its worst in this ZIP code
Strong wind92.2Relatively High at its worst in this ZIP code
Heat wave92Relatively High at its worst in this ZIP code
Hail88.7Relatively High at its worst in this ZIP code
Wildfire87.2Relatively Low at its worst in this ZIP code
Winter weather86.6Relatively High at its worst in this ZIP code
River flooding83.1Relatively High at its worst in this ZIP code
Cold wave78.5Relatively High at its worst in this ZIP code
Lightning75.2Relatively High at its worst in this ZIP code
Landslide72.3Relatively Low at its worst in this ZIP code
Earthquake62.6Relatively Low at its worst in this ZIP code
Hurricane42.4Very Low at its worst in this ZIP code
Compared with Missouri and the United States

State and national columns are figures for those areas, not for this ZIP code. American Community Survey 2019–2023 five-year estimates

This ZIPMissouriUnited States
Median household income$65,912$68,920$78,538
Income per person$32,813$38,497$43,289
Poverty rate9.7%12.6%12.4%
Median home value$215,200$215,600$303,400
Median gross rent$715$996$1,348
Homeownership76.6%67.9%65%
Bachelor's degree or higher22.3%31.9%35%
Unemployment rate3.3%4.1%5.2%
Works from home2.1%11.6%13.5%
Born outside the US2.1%4.4%13.9%
Median age39.838.938.7
Climate

NOAA US Climate Normals 1991-2020, from the nearest weather station with a full year of records. The station and its distance are named above, because a station forty kilometres away describes somewhere else.

Weather stationDIAMOND 2W, MO US3.8 km away
Rain in a year47 in

Average high and low by month

January46°F / 22.5°F1.91 in rain
February50.5°F / 26.3°F2.24 in rain
March59.5°F / 34.7°F3.54 in rain
April68.8°F / 43.6°F5.24 in rain
May76.3°F / 53.5°F6.71 in rain
June85.1°F / 62.9°F5.49 in rain
July89.9°F / 66.9°F3.8 in rain
August90°F / 64.9°F3.48 in rain
September82.5°F / 57.2°F4.48 in rain
October71.6°F / 44.8°F3.89 in rain
November59.1°F / 34.7°F3.58 in rain
December49°F / 26.2°F2.51 in rain
Access to food

USDA Food Access Research Atlas, estimated for this ZIP code from census tract data. Each figure is the share of the ZIP code's land area that falls in a tract carrying that flag.

Low income and far from a supermarketNone of this ZIP code
Far from a supermarketNone of this ZIP code
No vehicle and far from a supermarket87% of this ZIP code's area
School districts

NCES Geographic Relationship File 2025, which states the association between each district and each ZIP code tabulation area directly. Elementary and secondary districts can cover the same ground, so shares need not total 100%.

This ZIP code is served by 3 school districts, so the address decides which one, not the ZIP code.

Diamond R-IV School District92.1% of this ZIP code's land area
Carthage R-IX School District5.3% of this ZIP code's land area
East Newton County R-VI School District2% of this ZIP code's land area
Community and walkability

CDC/ATSDR Social Vulnerability Index 2022 and the EPA National Walkability Index, both estimated for this ZIP code from census tract data. Vulnerability figures are national percentile ranks, not measurements.

Overall social vulnerability32more vulnerable than 32% of US census tracts
Socioeconomic status42more vulnerable than 42% of US census tracts
Household characteristics28more vulnerable than 28% of US census tracts
Racial and ethnic minority status18more vulnerable than 18% of US census tracts
Housing type and transport39more vulnerable than 39% of US census tracts
Walkability4.5 out of 20Least walkable
Nearby ZIP codes

The closest ZIP codes by centre point, which is not the same as sharing a border.

64841 Duenweg, MO10.9 km away
64844 Granby, MO12.1 km away
64864 Saginaw, MO13.3 km away
64850 Neosho, MO16.2 km away
64836 Carthage, MO17.1 km away
64804 Joplin, MO17.4 km away
64853 Newtonia, MO18.7 km away
64835 Carterville, MO19.1 km away
Location, counties and time zone

County shares from Census 2020 ZCTA relationship files. Time zone from the USDOT National Transportation Atlas, which renders the boundaries written into 49 CFR Part 71.

Newton County87.2% of this ZIP code's land area
Jasper County12.8% of this ZIP code's land area
Time zoneCentral (UTC-06:00 standard)
Daylight saving timeObserved
Land area52.02 sq mi
Water area0.1 sq mi
Population density69 people per sq mi
Latitude, longitude37.0060, -94.3204

Figures are published for this ZIP code or its Census tabulation area unless a section says otherwise. Estimates whose margin of error made them unreliable are omitted rather than shown. Sources: US Census Bureau, CDC, IRS.

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