Town · Missouri
Diamond, Missouri
Diamond, town, in Newton County, Missouri. Diamond had 906 residents on July 1, 2025 by the Census Bureau's estimate, up 8.6% since 2020; the 2020 Census counted 831 and the ACS 2020-2024 5-year estimates put it at 914 (±237). GEOID 2919432.
Residents, July 2025 estimate
906
Census Bureau estimate (no margin published)
2020 Census count: 831 · ACS 2020-2024: 914 ±237
Median household income
$73,587
±$10,578 (90% margin)
Missouri: $70,702
Median home value
$141,400
±$11,249 (90% margin)
Missouri: $230,300
Median gross rent
$863
±$240 (90% margin)
Missouri: $1,033
Where is Diamond and what county is it in?
Diamond is a town in Newton County, Missouri. It covers 0.8 square miles of land, 1,063 residents per square mile in 2020.
Diamond is in the Joplin, MO-KS metropolitan statistical area, which takes in 3 counties (Census Bureau delineation, July 2023).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Diamond, and is it growing?
The Census Bureau estimates that 906 people lived in Diamond on July 1, 2025, up 8.6% since 2020, faster than Missouri (+1.9%). The 2020 Census counted 831 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 914 (±237).
| Measure | Diamond | Newton County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 914 ±237 | 60,118 | no clear change |
| Households | 336 ±65 | 22,129 | no clear change |
| Average household size | 2.72 ±0.37 | 2.66 | no clear change |
| Housing units | 359 ±71 | 24,866 | no clear change |
Diamond's population since 2000
From 807 in 2000 to 906 in 2025: up 12.3%. The 2000, 2010 and 2020 figures are census counts, each for Diamond as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Diamond?
The median resident of Diamond is 37.3 years old; 20.1% are under 18 and 13.2% are 65 or older. The largest group is non-Hispanic white residents at 82.4%, then Hispanic or Latino residents (of any race) at 9.4%.
| Measure | Diamond | Newton County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 37.3 ±4.7 | 40.2 | no clear change |
| Under 18 years | 20.1% ±5.1 pts | 23.9% | – |
| 65 years and over | 13.2% ±5.1 pts | 18.8% | – |
| Male | 49.8% ±7.1 pts | 49.4% | – |
| Hispanic or Latino (any race) | 9.4% ±7.2 pts | 6.8% | – |
| White alone, not Hispanic | 82.4% ±8.1 pts | 80.4% | −12.9 pts |
| Black or African American alone, not Hispanic | 1.3% ±1.9 pts | 0.9% | – |
| Asian alone, not Hispanic | 0.0% ±3.8 pts | 1.6% | – |
| American Indian and Alaska Native alone, not Hispanic | 1.2% ±1.3 pts | 1.2% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±3.8 pts | 1.4% | – |
| Two or more races, not Hispanic | 5.3% ±3.3 pts | 7.2% | – |
| Some other race alone, not Hispanic | 0.4% ±0.8 pts | 0.5% | – |
| Born outside the United States | 0.7% ±0.7 pts | 4.5% | – |
| Speak a language other than English at home (age 5+) | 1.3% ±1.4 pts | 7.5% | – |
| Civilian veterans (age 18+) | 6.6% ±3.2 pts | 8.8% | – |
| With a disability | 16.3% ±4.9 pts | 15.0% | – |
| No health insurance coverage | 9.6% ±4.1 pts | 12.7% | no clear change |
| High school graduate or higher (age 25+) | 87.1% ±8.5 pts | 89.5% | – |
| Bachelor's degree or higher (age 25+) | 17.9% ±6.7 pts | 23.5% | no clear change |
| Graduate or professional degree (age 25+) | 3.0% ±2.3 pts | 7.8% | – |
| Lived in the same house a year earlier | 96.9% ±2.6 pts | 86.1% | – |
| Moved from another state in the past year | 0.2% ±0.4 pts | 2.5% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Diamond earn?
Half of Diamond's 336 households earn less than $73,587 a year (±$10,578), against $66,301 in Newton County and $70,702 in Missouri. In 2015-2019 the median was $57,344 in 2024 dollars, so it rose by $16,243 after inflation.
| Measure | Diamond | Newton County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $73,587 ±$10,578 | $66,301 | +$16,243 |
| Mean household income | $80,472 ±$11,774 | $87,454 | – |
| Per capita income | $31,532 ±$3,584 | $33,219 | no clear change |
| People below the poverty line | 3.7% ±2.5 pts | 13.5% | – |
| Children under 18 below the poverty line | 2.8% ±4.0 pts | 18.8% | – |
| Households receiving SNAP | 7.4% ±5.7 pts | 12.3% | – |
| Households with a computer | 97.3% ±2.6 pts | 94.9% | – |
| Households with a broadband subscription | 89.6% ±5.7 pts | 88.0% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Diamond?
Owners occupy 78.3% of Diamond's occupied homes and renters 21.7%. The median owner-occupied home is valued at $141,400 by its owner (±$11,249). The median renter pays $863 a month including utilities.
| Measure | Diamond | Newton County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $141,400 ±$11,249 | $190,700 | +$41,468 |
| Median gross rent | $863 ±$240 | $817 | no clear change |
| Renters paying 35% or more of income on rent | 23.8% ±22.4 pts | 28.9% | – |
| Median monthly owner costs, with a mortgage | $1,046 ±$172 | $1,310 | – |
| Owner-occupied homes | 78.3% ±8.7 pts | 76.6% | no clear change |
| Renter-occupied homes | 21.7% ±8.7 pts | 23.4% | – |
| Housing units | 359 ±71 | 24,866 | no clear change |
| Homeowner vacancy rate | 0.0% ±12.4 pts | 0.3% | – |
| Rental vacancy rate | 0.0% ±35.8 pts | 4.5% | – |
| Single-family detached homes | 89.7% ±5.8 pts | 76.0% | – |
| Mobile homes | 8.9% ±5.6 pts | 13.4% | – |
| Built 2020 or later | 1.1% ±1.7 pts | 1.6% | – |
| Built 2010 to 2019 | 11.7% ±6.7 pts | 7.4% | – |
| Built 1939 or earlier | 11.7% ±5.4 pts | 10.0% | – |
| Households with no vehicle | 0.9% ±1.2 pts | 3.9% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Diamond building?
Builders took permits for 4 new housing units in Diamond in 2025 (4 in single-family houses), 4.4 per 1,000 residents against 2.8 across Missouri.
Counts of units in permits a local office issued; not every permitted unit is built. A year marked with months was reported for part of the year.
Source: Building Permits Survey, annual place files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Diamond work and get to work?
74.6% of Diamond's workers drive alone and 7.1% work from home. The average trip to work takes 27.5 minutes. The unemployment rate in 2020-2024 averaged 6.6%.
| Measure | Diamond | Newton County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 71.8% ±8.0 pts | 60.2% | – |
| Unemployment rate | 6.6% ±3.9 pts | 5.9% | – |
| Drove alone to work | 74.6% ±9.0 pts | 78.1% | – |
| Carpooled | 12.4% ±6.0 pts | 10.6% | – |
| Public transportation | 0.0% ±6.7 pts | 0.0% | – |
| Walked | 3.3% ±4.9 pts | 1.7% | – |
| Worked from home | 7.1% ±4.3 pts | 8.6% | – |
| Mean travel time to work | 27.5 min ±4.1 | 22.3 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What census tracts are in Diamond?
No census tract lies mostly in Diamond; 1 tract reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 204.02Newton County | 4,258 | $67,250 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Diamond) · Census block assignment files
How does Diamond compare with other places in Missouri?
By the Census Bureau's July 2025 estimates, Diamond is the 10,710th-most populous of the 19,476 U.S. incorporated places that have one and the 357th-most populous of 936 in Missouri.
Diamond is not ranked by income or the other survey measures: those rankings include places of 1,000 or more residents (2020 Census) with a reliable estimate.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 357th | 936 |
Diamond's figures with every place in Missouri (CSV)
Every place in Missouri, sortable · Compare Diamond with other places
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How reliable are the figures for Diamond?
20 of the 57 figures for Diamond on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · ACS technical documentation
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Diamond are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' public schools in Diamond.