Seneca, KS · standard
ZIP Code 66538
Nemaha County, Kansas - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 3,264
- 9/sq mi
- $78,981
- Median income
- $299,300
- Median home value
- 32.9%
- Bachelor's or higher
The verdict
Seneca pairs an above-median household income with above-median home values, in a rural, homeowner-dominated area.
- Top 39%
- household income, US ZIPs
- Top 34%
- home value, US ZIPs
- 9
- people per sq mi
- 81%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 66538 against every reporting US ZIP.
ZIP code 66538 covers 379.5 square miles in Seneca, Nemaha County, Kansas (a standard USPS delivery area), with a modest 3,264 residents on file, a density of 9 people per square mile, in the Chicago time zone.
ZIP 66538 lands in the middle-income range, with a median household income of $78,981 (10% above the Kansas average), while per-capita income is $39,890. Poverty here runs at 8.2%, with unemployment measured at 2.0%. Housing costs here run $299,300 for a typical home value (85% above the state average), with rent averaging $808 a month; 81.0% of homes are owner-occupied.
A solid share of residents have a four-year degree: 32.9% of adults hold a bachelor's degree or higher, the median age is 41.3, and the average commute is -. We also surface 3 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Nemaha County, so you can benchmark 66538 against its immediate geography rather than a national average alone.
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 66538
Top 5 sectors by establishment count in Seneca, KS
Which industries have the most business establishments in ZIP 66538.
- Retail trade
Retail trade
22 establishments
- Construction
Construction
21 establishments
- Health care and social assistance
Health care and social assistance
21 establishments
- Wholesale trade
Wholesale trade
17 establishments
- Other services (except public administration)
Other services (except public administration)
16 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 66538, Seneca, 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
3,264
Population
379.5
Area (sq mi)
9
People / sq mi
Chicago
Time Zone
standard
ZIP Type
Who lives in ZIP 66538?
41.3
Median Age
53.4%
Male
46.6%
Female
1.4%
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?
$78,981
Median Household Income
+10% vs state
$39,890
Per Capita Income
8.2%
Poverty Rate
2.0%
Unemployment Rate
How ZIP 66538 ranks nationally
Seneca, KS household income vs. every US ZIP code
Median household income, the full national distribution, with this ZIP marked
$78,981 Top 39% higher than 61% of 30,318 US ZIPs
Each bar is a $20K-wide band; taller bars hold more US 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?
1,509
Total Housing Units
1,361
Occupied Units
148
Vacant Units
2.54
Avg Household Size
Occupancy Type
$299,300
Median Home Value
+85% vs state
$808
Median Rent
1980
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 176 business establishments in ZIP 66538, employing approximately 2,352 people with a combined annual payroll of $115,104,000.
176
Businesses
2,352
Employees
$115.1M
Annual Payroll
14
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Retail trade | 22 | 12.5% |
| Construction | 21 | 11.9% |
| Health care and social assistance | 21 | 11.9% |
| Wholesale trade | 17 | 9.7% |
| Other services (except public administration) | 16 | 9.1% |
| Professional, scientific, and technical services | 13 | 7.4% |
| Finance and insurance | 12 | 6.8% |
| Transportation and warehousing | 11 | 6.3% |
| Accommodation and food services | 10 | 5.7% |
| Manufacturing | 9 | 5.1% |
| Administrative and support and waste management and remediation services | 6 | 3.4% |
| Information | 4 | 2.3% |
| Agriculture, forestry, fishing and hunting | 3 | 1.7% |
| Educational services | 3 | 1.7% |
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 66538 vs 66522 →
ZIP 66538 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 66538
Seneca (66538)
3,264 residents
- 66404 530
Baileyville (66404)
530 residents
- 66408 434
Bern (66408)
434 residents
- 66522 49
Oneida (66522)
49 residents
What this shows Among its immediate neighbors, ZIP 66538 ranks the most populous - useful context the national average alone can't give.
ZIP 66538 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 66408
Bern (66408)
$91,250 median income
- 66404
Baileyville (66404)
$89,620 median income
- 66538
Seneca (66538)
$78,981 median income
- 66522
Oneida (66522)
$57,500 median income
What this shows By household income, ZIP 66538 ranks #3 of 4 neighboring ZIPs, local affluence varies block to block, not just metro to metro.
More ZIP Codes in Nemaha County
Related Areas
Frequently Asked Questions
What county is ZIP code 66538 in? ▼
What is the population of ZIP code 66538? ▼
What is the median household income in ZIP 66538? ▼
What is the average home value in ZIP 66538? ▼
What is the demographic makeup of ZIP 66538? ▼
How many businesses are in ZIP code 66538? ▼
What are the main industries in ZIP code 66538? ▼
What is the education level in ZIP code 66538? ▼
What percentage of residents own vs. rent in ZIP 66538? ▼
What is the poverty rate in ZIP code 66538? ▼
Read our methodology to see how this data is sourced, computed, and verified.