Residential delivery area · Idaho
ZIP Code 83871: Troy, ID
ZIP code 83871 uses the postal name Troy, Idaho and lies entirely in Latah County (Census 2020 ZIP-county file). About 2,200 people live there (Census Bureau, ACS 2020-2024). Median household income is $89,750 (Census Bureau, ACS 2020-2024). By Census place, under 1% of its land lies in Troy; more than 99% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Troy · its only residential ZIP
- County
- Latah County
- Census places
- Troy
- Micro area
- Moscow, ID
- House district
- ID-1 119th Congress
- State
- Idaho
- Time zone
- Pacific
- Land area
- 112.0 sq mi · 20 people per sq mi
Where is ZIP code 83871?
83871 centers on 46.742°, -116.743° and covers 112.0 square miles of land plus 0.2 of water. It borders 6 ZIP codes: 83843, 83857, 83823, 83537, 83832, 83834.
The map draws ZIP code areas only. For the streets inside 83871, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 83871 compare with the rest of Latah County?
| Measure | 83871 | In Latah County | In ID |
|---|---|---|---|
| People (ACS 2020-2024) | 2,240 | 4th of 14 | 103rd of 279 |
| Median household income | $90k | 2nd of 7 | 25th of 126 |
| Median home value | $362k | 3rd of 8 | 69th of 138 |
Its median household income is higher than in 73% of U.S. residential ZIP codes, and it is denser than 26% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 83871?
The 2020 Census counted 2,015 people in 83871; the ACS, which samples households over 2020-2024, estimates 2,240. Between the 2010 and 2020 censuses its population grew 4.0% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 2,240±313 (90% margin)
- 2020 Census count
- 2,015+4.0% since 2010 (1,938)
- Households
- 898
- Median age
- 48.4
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 83871?
Of the 2,240 people the ACS estimates in 83871, 20.9% are under 18 and 25.2% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (94.1%).
- Under 1820.9%
- 18 to 6453.9%
- 65 and older25.2%
- White, not Hispanic94.1%
- Other or two or more3.2%
- Hispanic or Latino2.7%
- Black, not Hispanic0.0%
- Asian, not Hispanic0.0%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 83871 earn?
Median household income is $89,750 (ACS 2020-2024), the 2nd highest of the 7 ranked ZIP codes in Latah County. It is not measurably different from 2015-2019 ($80,243 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $89,750
- Income per person
- $41,891
- Below the poverty line
- 2.8%
- Unemployed (of the labor force)
- 2.8%
- Adults 25+ with a bachelor's degree
- 38.0%
- Adjusted gross income per tax return, 2022
- $83,540970 returns; wages 60% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 83871?
FHFA's house price index for 83871, built from repeat sales and appraisals of the same homes, rose 118% from 2015 to 2025 and rose 70% from 2020 to 2025, and moved −10.1% in 2025.
- Median home value (owners' estimate)
- $361,800
- Median gross rent
- $856
- Homes owned by their occupants
- 88.2%
- Housing units
- 975
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 83871?
43 business establishments had a location in this ZIP code in 2023, 3 fewer than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction12
- Agriculture, forestry, fishing and hunting7
- Manufacturing6
- Wholesale trade4
- Retail trade4
- Accommodation and food services3
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 83871?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 83843 | Moscow | 26,591 | $59k | 9.4 mi |
| 83857 | Princeton | 1,074 | $78k | 10.5 mi |
| 83823 | Deary | 1,559 | $78k | 11.0 mi |
| 83537 | Kendrick | 1,125 | $72k | 12.6 mi |
| 83832 | Genesee | 1,961 | $91k | 15.3 mi |
| 83834 | Harvard | 189 | $99k | 18.5 mi |
| 83844 | Moscow | 2,971 | – | 13.2 mi (near) |
| 83872 | Viola | 818 | $100k | 13.3 mi (near) |
| 83535 | Juliaetta | 1,143 | $58k | 14.3 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.