Mackay, ID · standard
ZIP Code 83251
Custer County, Idaho - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 1,097
- 0/sq mi
- $73,482
- Median income
- $366,900
- Median home value
- 31.8%
- Bachelor's or higher
National ZIP placement
Mackay pairs an above-median household income with upper-quartile home values, in a rural, homeowner-dominated area.
- Top 48%
- household income, US ZIPs
- Top 24%
- home value, US ZIPs
- 0
- people per sq mi
- 79%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 83251 against every reporting US ZIP.
ZIP code 83251 is a sparsely populated ZIP (a standard USPS delivery area) in Mackay, Custer County, Idaho, home to just 1,097 residents across 2742.5 square miles, a density of 0 people per square mile, in the Boise time zone.
ZIP 83251 lands in the middle-income range, with a median household income of $73,482 (0% above the average Idaho ZIP), while per-capita income is $39,453. The poverty rate is 17.8%, with unemployment at 6.0%; those measures add context to the income figure. Median home value is $366,900 (3% below the average Idaho ZIP); 79.3% of occupied homes are owner-occupied.
A solid share of residents have a four-year degree: 31.8% of adults hold a bachelor's degree or higher, the median age is 60.6, and the average commute is -. No nearby ZIP peer set is available for this delivery area, so the Idaho and national benchmarks above are the appropriate context for 83251.
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 83251
Top 5 sectors by establishment count in Mackay, ID
Which industries have the most business establishments in ZIP 83251.
- Construction
Construction
8 establishments
- Retail trade
Retail trade
7 establishments
- Accommodation and food services
Accommodation and food services
6 establishments
- Health care and social assistance
Health care and social assistance
4 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 83251, Mackay, 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
1,097
Population
2742.5
Area (sq mi)
0
People / sq mi
Boise
Time Zone
standard
ZIP Type
Who lives in ZIP 83251?
60.6
Median Age
45.2%
Male
54.8%
Female
4.5%
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?
$73,482
Median Household Income
+0% vs state ZIP avg
$39,453
Per Capita Income
17.8%
Poverty Rate
6.0%
Unemployment Rate
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
942housing units
942
Total Housing Units
603
Occupied Units
339
Vacant Units
2.27
Avg Household Size
Occupancy Type
$366,900
Median Home Value
-3% vs state ZIP avg
1989
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 41 business establishments in ZIP 83251, employing approximately 215 people with a combined annual payroll of $7,289,000.
41
Businesses
215
Employees
$7.3M
Annual Payroll
4
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Construction | 8 | 19.5% |
| Retail trade | 7 | 17.1% |
| Accommodation and food services | 6 | 14.6% |
| Health care and social assistance | 4 | 9.8% |
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 83251, both outside ID so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (1,097 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.