Saint Marys, KS · standard
ZIP Code 66536
Pottawatomie County, Kansas - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 3,922
- 26/sq mi Moderate-density area
- $85,568
- Median income Above-median income area
- $224,600
- Median home value Near-median home value
- 25.2%
- Bachelor's or higher Near-average bachelor's attainment
National ZIP placement
Saint Marys pairs an above-median household income with above-median home values, in a rural, homeowner-dominated area.
- Top 31%
- household income, US ZIPs
- Top 49%
- home value, US ZIPs
- 26
- people per sq mi
- 71%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 66536 against every reporting US ZIP.
FHFA HPI release change
What changed in the latest House Price Index year
- FHFA House Price Index values in ZIP 66536 (Saint Marys, KS) fell -2.6% from 2023 to 2024. The all-transactions index moved from 259.2 in 2023 to 252.4 in 2024 (2000 = 100).
ZIP code 66536 covers 152.6 square miles in Saint Marys, Pottawatomie County, Kansas (a standard USPS delivery area), with a modest 3,922 residents on file, a density of 26 people per square mile, in the Chicago time zone.
ZIP 66536 lands in the middle-income range, with a median household income of $85,568 (19% above the average Kansas ZIP), while per-capita income is $27,956. The poverty rate is 8.1%, with unemployment at 4.8%; those measures add context to the income figure. Housing is both higher-cost and owner-heavy: median home value is $224,600 (39% above the average Kansas ZIP), while 71.3% of occupied homes are owner-occupied and median rent is $887.
Educational attainment sits below the national norm: 25.2% of adults hold a bachelor's degree or higher, the median age is 24.9, and the average commute is -. The page also surfaces 4 ZIP codes within roughly 10 miles and 6 more in Pottawatomie County, so 66536 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 →
Top industries in ZIP 66536
Top 5 sectors by establishment count in Saint Marys, KS
Which industries have the most business establishments in ZIP 66536.
- Construction
Construction
25 establishments
- Retail trade
Retail trade
21 establishments
- Other services (except public administration)
Other services (except public administration)
11 establishments
- Health care and social assistance 9
Health care and social assistance
9 establishments
- Wholesale trade 7
Wholesale trade
7 establishments
What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.
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 66536, Saint Marys, KS · 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
3,922
Population
152.6
Area (sq mi)
26
People / sq mi
Chicago
Time Zone
standard
ZIP Type
Who lives in ZIP 66536?
24.9
Median Age
51.8%
Male
48.2%
Female
3.2%
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?
$85,568
Median Household Income
+19% vs state ZIP avg
$27,956
Per Capita Income
8.1%
Poverty Rate
4.8%
Unemployment Rate
How ZIP 66536 ranks among Kansas ZIPs
Saint Marys, KS household income vs. every Kansas ZIP code
Median household income among 659 reporting Kansas ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$85,568 Top 22% higher than 78% of 659 Kansas ZIPs
Each bar is a $20K-wide band; taller bars hold more Kansas 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
1,215housing units
1,215
Total Housing Units
1,155
Occupied Units
60
Vacant Units
3.49
Avg Household Size
Occupancy Type
$224,600
Median Home Value
+39% vs state ZIP avg
$887
Median Rent
1976
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
-2.6%
YoY Change (2024)
252
HPI Index (2000 = 100)
+152%
Total Change Since 2000
Home values in ZIP 66536 have decreased 2.6% over the past year (2024). Since 2000, this ZIP has seen +152% cumulative appreciation.
| Year | Annual Change | HPI Index |
|---|---|---|
| 2020 | -3.7% | 184 |
| 2021 | +11.2% | 205 |
| 2022 | +15.2% | 236 |
| 2023 | +10.0% | 259 |
| 2024 | -2.6% | 252 |
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 2024. ZIP codes with few transactions may show missing values.
What businesses operate in this ZIP?
Census Bureau data shows 109 business establishments in ZIP 66536, employing approximately 1,918 people with a combined annual payroll of $99,330,000.
109
Businesses
1,918
Employees
$99.3M
Annual Payroll
11
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Construction | 25 | 22.9% |
| Retail trade | 21 | 19.3% |
| Other services (except public administration) | 11 | 10.1% |
| Health care and social assistance | 9 | 8.3% |
| Wholesale trade | 7 | 6.4% |
| Manufacturing | 6 | 5.5% |
| Finance and insurance | 6 | 5.5% |
| Professional, scientific, and technical services | 6 | 5.5% |
| Administrative and support and waste management and remediation services | 5 | 4.6% |
| Real estate and rental and leasing | 4 | 3.7% |
| Accommodation and food services | 4 | 3.7% |
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 66536 vs 66422 →
ZIP 66536 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 66536
Saint Marys (66536)
3,922 residents
- 66533
Rossville (66533)
1,832 residents
- 66418 707
Delia (66418)
707 residents
- 66422 487
Emmett (66422)
487 residents
- 66407 479
Belvue (66407)
479 residents
What this shows Among its immediate neighbors, ZIP 66536 ranks the most populous - useful context the national average alone can't give.
ZIP 66536 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 66536
Saint Marys (66536)
$85,568 median income
- 66418
Delia (66418)
$77,885 median income
- 66422
Emmett (66422)
$73,257 median income
- 66407
Belvue (66407)
$67,750 median income
- 66533
Rossville (66533)
$62,237 median income
What this shows By household income, ZIP 66536 ranks the highest of 5 neighboring ZIPs, local affluence varies block to block, not just metro to metro.
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 66536, both outside KS so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (3,922 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Pottawatomie County
Related Areas
Frequently Asked Questions
What county is ZIP code 66536 in?
ZIP code 66536 (Saint Marys) is located in Pottawatomie County, Kansas. Pottawatomie County contains multiple ZIP codes, see the full list at /counties/pottawatomie-ks.
What is the population of ZIP code 66536?
ZIP code 66536 in Saint Marys, KS has a population of 3,922 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 66536?
The median household income in ZIP 66536 is $85,568, which is 12% above the national average of $76,288.
What is the average home value in ZIP 66536?
The median home value in ZIP 66536 is $224,600, which is 19% below the national average of $278,155.
What is the demographic makeup of ZIP 66536?
The largest racial group in ZIP 66536 is White at 87.7%. Hispanic or Latino residents make up 7.2% of the population.
How many businesses are in ZIP code 66536?
ZIP code 66536 has 109 business establishments employing approximately 1,918 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 66536?
The top industries by establishment count in ZIP 66536 are: Construction (25), Retail trade (21), Other services (except public administration) (11). There are 11 industry sectors represented in total.
How have home values changed in ZIP code 66536?
According to the FHFA House Price Index, home values in ZIP 66536 decreased by 2.6% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 152%. 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 66536?
In ZIP code 66536, 56.5% of residents aged 25+ have a high school diploma or higher, and 25.2% 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 66536?
In ZIP code 66536, approximately 71.3% of occupied housing units are owner-occupied and 28.7% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 66536?
The poverty rate in ZIP code 66536 is 8.1% 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 66536's numbers, next.
- See how ZIP 66536 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Saint Marys, KS 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.