Zip Code 83605
Caldwell, Idaho — Canyon County
📍 ZIP code 83605 is in Caldwell, Canyon County, Idaho.
ZIP code 83605 is located in Caldwell, Canyon County, Idaho. It is a zip code in the Mountain (MST/MDT) Time Zone with an estimated population of 41,155. The area code for ZIP code 83605 is 208.
Quick Answer
Zip code 83605 is in Caldwell, Idaho (Canyon County). It has a population of 41,155, median household income of $60,657, and median home value of $300,900.
Population
41,155
Income
$60,657
Home Value
$300,900
Climate
93°F / 23°F
About Zip Code 83605
Zip code 83605 is located in Caldwell, Idaho, within Canyon County. Home to approximately 41,155 residents, this area sits at an elevation of 2420 ft and falls within the Mountain (MST/MDT) timezone. The local area code is 208.
The median household income is $60,657 per year, which is below the national median of $70,784. Homes in this zip code have a median value of $300,900, and the cost of living index is 86 (14% below the national average of 100).
Summers average a high of 93°F while winters drop to 23°F. The area receives about 11 in of rain and 10 in of snow annually. The zip code covers 27.8 square miles of land area and 0.3 square miles of water.
Key Statistics
41,155
$60,657
$300,900
Mountain (MST/MDT)
208
2420 ft
27.8 sq mi
31.9
14,197
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Compare With Nearby Zip Codes
| Metric | 83605 | 83651 | 83607 | 83687 | 83644 | 83656 |
|---|---|---|---|---|---|---|
| City | Caldwell, ID | Nampa, ID | Caldwell, ID | Nampa, ID | Middleton, ID | Notus, ID |
| Population | 41,155 | 36,997 | 33,804 | 40,299 | 15,418 | 687 |
| Median Income | $60,657 | $66,895 | $80,170 | $72,294 | $86,306 | $70,938 |
| Home Value | $300,900 | $312,500 | $385,100 | $369,700 | $392,000 | $238,600 |
| Cost of Living | 86 | 91 | 111 | 105 | 116 | 86 |
| Median Age | 31.9 | 35.3 | 35.5 | 33.9 | 37.5 | 31.3 |
Cost of Living
100 = National Average. Caldwell's cost of living is 14% below the national average.
vs. State Avg
Below
Affordability
Affordable
Income-to-Home
5.0x
Demographics
Zip code 83605 has a population of 41,155 people with a median age of 31.9. There are 14,197 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Caldwell (83605) population trend from 2010 to 2024
↑ 12.5%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
93°F
23°F
11 in
10 in
Caldwell experiences hot summers with average highs around 93°F. Winters are cool with lows averaging 23°F. The area receives about 10 in of snow per year.
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Housing & Economy
Median Home Value
$300,900
Median Household Income
$60,657
With 14,197 housing units across 27.8 square miles, 83605 has a housing density of 511 units per square mile. The home price-to-income ratio is 5.0x.
Location & Geography
Latitude
43.6606°
Longitude
-116.6547°
Land Area
27.8 sq mi
Water Area
0.3 sq mi
Nearby Zip Codes
Zip codes closest to 83605 (Caldwell, ID) with distances:
All Zip Codes in Caldwell, ID
Other zip codes serving Caldwell:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 83605's $60,657. A way to compare Caldwell to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 83605 (Caldwell, ID). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Caldwell, Idaho?
Caldwell, Idaho uses zip code 83605 along with 1 other zip codes.
What county is zip code 83605 in?
Zip code 83605 is located in Canyon County, Idaho.
What is the population of zip code 83605?
The population of zip code 83605 is 41,155 with a median age of 31.9.
Is 83605 in Caldwell, Idaho?
Yes, zip code 83605 is in Caldwell, Canyon County, Idaho. The area code is 208.
Frequently Asked Questions
What city is zip code 83605 in?
Zip code 83605 is in Caldwell, Idaho. It is part of Canyon County and uses the Mountain (MST/MDT) timezone.
What is zip code 83605?
Zip code 83605 is a U.S. postal code in Caldwell, Idaho (Canyon County). It has a population of 41,155 and covers 27.8 square miles.
What is the population of zip code 83605?
The population of zip code 83605 (Caldwell, ID) is 41,155 with a median age of 31.9. There are approximately 14,197 housing units in this area.
What is the median income in zip code 83605?
The median household income in zip code 83605 (Caldwell, ID) is $60,657 per year. The cost of living index is 86 (100 = national average).
What is the average home price in zip code 83605?
The median home value in zip code 83605 (Caldwell, ID) is $300,900. The cost of living index is 86 compared to the national average of 100.
What county is zip code 83605 in?
Zip code 83605 is located in Canyon County, Idaho. The primary city is Caldwell.
What is the area code for zip code 83605?
Zip code 83605 in Caldwell, ID uses area code 208. It is located in the Mountain (MST/MDT) timezone.
Is zip code 83605 a good place to live?
Zip code 83605 (Caldwell, ID) has a cost of living index of 86 (100 = national average), a median household income of $60,657, and median home values of $300,900. The median age is 31.9. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 83605?
The cost of living index for zip code 83605 (Caldwell, ID) is 86, where 100 represents the national average. This area is below the national average. Median home value: $300,900.
What schools serve zip code 83605?
Zip code 83605 in Caldwell, Idaho is served by the local school district of Canyon County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.