Casstown, OH · standard
ZIP Code 45312
Miami County, Ohio - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 1,435
- 20/sq mi Moderate-density area
- $91,842
- Median income Above-median income area
- $279,400
- Median home value Near-median home value
- 22.6%
- Bachelor's or higher Near-average bachelor's attainment
National ZIP placement
Casstown pairs an upper-quartile household income with above-median home values, in a rural, homeowner-dominated area.
- Top 25%
- household income, US ZIPs
- Top 37%
- home value, US ZIPs
- 20
- people per sq mi
- 96%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 45312 against every reporting US ZIP.
ZIP code 45312 is a sparsely populated ZIP (a standard USPS delivery area) in Casstown, Miami County, Ohio, home to just 1,435 residents across 71.4 square miles, a density of 20 people per square mile, in the New York time zone.
ZIP 45312 lands in the middle-income range, with a median household income of $91,842 (26% above the average Ohio ZIP), while per-capita income is $56,478. Both reported hardship measures are comparatively low in absolute terms: poverty is 2.1% and unemployment is 2.4%. Housing is both higher-cost and owner-heavy: median home value is $279,400 (42% above the average Ohio ZIP), while 95.7% of occupied homes are owner-occupied and median rent is $1,156.
Educational attainment sits below the national norm: 22.6% of adults hold a bachelor's degree or higher, the median age is 52.7, and the average commute is -. The page also surfaces 9 ZIP codes within roughly 10 miles and 6 more in Miami County, so 45312 can be compared with both its immediate and county-level context.
Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 45312, Casstown, OH · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.
Quick Facts
1,435
Population
71.4
Area (sq mi)
20
People / sq mi
New York
Time Zone
standard
ZIP Type
Who lives in ZIP 45312?
52.7
Median Age
54.3%
Male
45.7%
Female
0.0%
Foreign-Born
Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How much do residents earn?
$91,842
Median Household Income
+26% vs state ZIP avg
$56,478
Per Capita Income
2.1%
Poverty Rate
2.4%
Unemployment Rate
How ZIP 45312 ranks among Ohio ZIPs
Casstown, OH household income vs. every Ohio ZIP code
Median household income among 1,127 reporting Ohio ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$91,842 Top 17% higher than 83% of 1,127 Ohio ZIPs
Each bar is a $20K-wide band; taller bars hold more Ohio ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What is the education profile here?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
518housing units
518
Total Housing Units
484
Occupied Units
34
Vacant Units
2.24
Avg Household Size
Occupancy Type
$279,400
Median Home Value
+42% vs state ZIP avg
$1,156
Median Rent
1970
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How have home values changed over time?
FHFA House Price Index, annual appreciation data based on repeat sales and appraisals
+24.1%
YoY Change (2023)
192
HPI Index (2000 = 100)
+92%
Total Change Since 2000
Home values in ZIP 45312 have increased 24.1% over the past year (2023). Since 2000, this ZIP has seen +92% cumulative appreciation.
| Year | Annual Change | HPI Index |
|---|---|---|
| 2019 | +9.7% | 138 |
| 2020 | +8.6% | 150 |
| 2021 | +9.8% | 164 |
| 2022 | -5.7% | 155 |
| 2023 | +24.1% | 192 |
Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2023. ZIP codes with few transactions may show missing values.
What businesses operate in this ZIP?
Census Bureau data shows 15 business establishments in ZIP 45312, employing approximately 25 people with a combined annual payroll of $1,844,000.
15
Businesses
25
Employees
$1.8M
Annual Payroll
2
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Construction | 4 | 26.7% |
| Professional, scientific, and technical services | 3 | 20.0% |
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
Nearby ZIP Codes
Want a side-by-side? Compare 45312 vs 45389 →
ZIP 45312 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 45373
Troy (45373)
35,131 residents
- 45371
Tipp City (45371)
18,333 residents
- 45344
New Carlisle (45344)
16,955 residents
- 43072 5,948
Saint Paris (43072)
5,948 residents
- 45312 1,435
Casstown (45312)
1,435 residents
- 45317 1,180
Conover (45317)
1,180 residents
- 45326 1,179
Fletcher (45326)
1,179 residents
- 45389 521
Christiansburg (45389)
521 residents
- 45349 427
North Hampton (45349)
427 residents
What this shows Among its immediate neighbors, ZIP 45312 ranks #5 by population - useful context the national average alone can't give.
ZIP 45312 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 45371
Tipp City (45371)
$93,599 median income
- 45326
Fletcher (45326)
$93,472 median income
- 45312
Casstown (45312)
$91,842 median income
- 45344
New Carlisle (45344)
$78,471 median income
- 45349
North Hampton (45349)
$76,750 median income
- 43072
Saint Paris (43072)
$76,375 median income
- 45373
Troy (45373)
$75,742 median income
- 45319
Donnelsville (45319)
$67,708 median income
- 45389
Christiansburg (45389)
$62,250 median income
What this shows By household income, ZIP 45312 ranks #3 of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 45389 | Christiansburg, OH | 521 | 2.8 mi |
| 45326 | Fletcher, OH | 1,179 | 5.7 mi |
| 45373 | Troy, OH | 35,131 | 6.4 mi |
| 45344 | New Carlisle, OH | 16,955 | 8.1 mi |
| 45317 | Conover, OH | 1,180 | 8.6 mi |
| 43072 | Saint Paris, OH | 5,948 | 7.6 mi |
| 45371 | Tipp City, OH | 18,333 | 9.4 mi |
| 45349 | North Hampton, OH | 427 | 8.8 mi |
| 45319 | Donnelsville, OH | 293 | 12.3 mi |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 45312, both outside OH so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (1,435 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Miami County
Related Areas
Frequently Asked Questions
What county is ZIP code 45312 in?
ZIP code 45312 (Casstown) is located in Miami County, Ohio. Miami County contains multiple ZIP codes, see the full list at /counties/miami-oh.
What is the population of ZIP code 45312?
ZIP code 45312 in Casstown, OH has a population of 1,435 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 45312?
The median household income in ZIP 45312 is $91,842, which is 20% above the national average of $76,288.
What is the average home value in ZIP 45312?
The median home value in ZIP 45312 is $279,400, which is 0% above the national average of $278,155.
What is the demographic makeup of ZIP 45312?
The largest racial group in ZIP 45312 is White at 96.0%.
How many businesses are in ZIP code 45312?
ZIP code 45312 has 15 business establishments employing approximately 25 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
How have home values changed in ZIP code 45312?
According to the FHFA House Price Index, home values in ZIP 45312 increased by 24.1% in 2023. Since 2000, home values in this ZIP have appreciated by approximately 92%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 45312?
In ZIP code 45312, 57.5% of residents aged 25+ have a high school diploma or higher, and 22.6% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 45312?
In ZIP code 45312, approximately 95.7% of occupied housing units are owner-occupied and 4.3% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 45312?
The poverty rate in ZIP code 45312 is 2.1% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.
Related
Take this with you
What to do with ZIP 45312's numbers, next.
- See how ZIP 45312 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Casstown, OH ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.