Idaho City, ID · standard
ZIP Code 83631
Boise County, Idaho - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 1,333
- 3/sq mi
- $80,714
- Median income
- $409,800
- Median home value
- 27.5%
- Bachelor's or higher
The verdict
Idaho City pairs an above-median household income with upper-quartile home values, in a rural, homeowner-dominated area.
- Top 37%
- household income, US ZIPs
- Top 20%
- home value, US ZIPs
- 3
- people per sq mi
- 85%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 83631 against every reporting US ZIP.
ZIP code 83631 is a sparsely populated ZIP (a standard USPS delivery area) in Idaho City, Boise County, Idaho, home to just 1,333 residents across 416.6 square miles, a density of 3 people per square mile, in the Boise time zone.
ZIP 83631 lands in the middle-income range, with a median household income of $80,714 (10% above the Idaho average), while per-capita income is $34,344. 3.6% of residents live below the poverty line, and the unemployment rate reads 4.5%. Median home value sits at $409,800 (8% above the state average), median rent at $780 a month, and owner-occupancy at 84.9%.
Educational attainment sits below the national norm: 27.5% of adults hold a bachelor's degree or higher, the median age is 44.3, and the average commute is -. Use the benchmarks above to see where 83631 sits relative to Idaho and the national baseline rather than viewing the numbers in isolation.
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 83631
Top 5 sectors by establishment count in Idaho City, ID
Which industries have the most business establishments in ZIP 83631.
- Accommodation and food services
Accommodation and food services
9 establishments
- Retail trade
Retail trade
5 establishments
- Construction 3
Construction
3 establishments
- Administrative and support and waste management and remediation services 3
Administrative and support and waste management and remediation services
3 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 83631, Idaho City, ID · 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
1,333
Population
416.6
Area (sq mi)
3
People / sq mi
Boise
Time Zone
standard
ZIP Type
Who lives in ZIP 83631?
44.3
Median Age
49.4%
Male
50.6%
Female
3.5%
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?
$80,714
Median Household Income
+10% vs state
$34,344
Per Capita Income
3.6%
Poverty Rate
4.5%
Unemployment Rate
How ZIP 83631 ranks nationally
Idaho City, ID household income vs. every US ZIP code
Median household income, the full national distribution, with this ZIP marked
$80,714 Top 37% higher than 63% 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?
1,170
Total Housing Units
808
Occupied Units
362
Vacant Units
2.37
Avg Household Size
Occupancy Type
$409,800
Median Home Value
+8% vs state
$780
Median Rent
1988
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 33 business establishments in ZIP 83631, employing approximately 170 people with a combined annual payroll of $3,983,000.
33
Businesses
170
Employees
$4.0M
Annual Payroll
4
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Accommodation and food services | 9 | 27.3% |
| Retail trade | 5 | 15.2% |
| Construction | 3 | 9.1% |
| Administrative and support and waste management and remediation services | 3 | 9.1% |
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
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Frequently Asked Questions
What county is ZIP code 83631 in? ▼
What is the population of ZIP code 83631? ▼
What is the median household income in ZIP 83631? ▼
What is the average home value in ZIP 83631? ▼
What is the demographic makeup of ZIP 83631? ▼
How many businesses are in ZIP code 83631? ▼
What are the main industries in ZIP code 83631? ▼
What is the education level in ZIP code 83631? ▼
What percentage of residents own vs. rent in ZIP 83631? ▼
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Read our methodology to see how this data is sourced, computed, and verified.