Caldwell is a city in Canyon County, Idaho, home to about 66,516 people across 23 square miles. Its ZIP codes are 83605 and 83607, and parts of 83651 and 83687 are in Caldwell too.
Homes sold for a median of $244 per square foot across 2 ZIP codes in the three months ending August 2026, and all of them were seller’s markets.
Mostly Caldwell
Mostly Caldwell; also Notus
Mostly Nampa; part is in Caldwell
Mostly Nampa; part is in Caldwell
Each card is that ZIP code’s whole market, including any part outside Caldwell. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Caldwell’s story and what everyday life there is like, for people thinking about moving in.
Are you a local agent who knows Caldwell well? Agents who advertise here will be able to write the guide. Advertise on OfferBacked
| Nearest major airport | Boise Air Terminal/Gowen Field (BOI)25 miles away |
|---|---|
| Nearest city of 250,000+ | Portland, OR320 miles away |
| Nearest city of 1 million+ | Los Angeles, CA671 miles away |
Straight-line distances from the center of Caldwell; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Caldwell had 59,996 residents in the 2020 census, up 131% since 2000.
It’s the 5th largest of 232 towns in Idaho by population.
Canyon County grew from 7,497 residents in 1900 to 231,105 in 2020.
Canyon County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 90°F in summer, and winter lows average 24°F. About 10.2 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Deer Flat Dam, ID weather station (5 miles away).
72,117 jobs at 5,933 businesses in Canyon County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
449 doctors and other health care providers list an office in Caldwell’s ZIP codes.
Nearest hospitals
Providers with an office here
| Primary care doctors | 65 |
|---|---|
| Specialist doctors | 42 |
| Dentists | 26 |
| Nurse practitioners and physician assistants | 92 |
| Mental health providers | 160 |
| Physical and occupational therapists | 37 |
| Optometrists | 14 |
| Chiropractors | 13 |
| Pharmacies | 16 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (16 nearby)
Grocery stores (6 nearby)
Pharmacies (2 nearby)
Libraries (2 nearby)
Museums (2 nearby)
Theaters and performance venues (2 nearby)
Counts are within about 3.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Established in 1883.
Notable people born here
Source: Wikidata (wikidata.org), the free knowledge base; people are listed by place of birth.
Public schools here are run by Vallivue School District, Caldwell District, Notus District and others. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Central Canyon Elementary SchoolCaldwell | Pre-K–5 | 654 | Public | 3.0 mi |
| Lewis and Clark ElementaryCaldwell | Pre-K–4 | 348 | Public | 1.6 mi |
| Notus Elementary SchoolCaldwell | Pre-K–6 | 178 | Public | 7.9 mi |
| Purple Sage ElementaryCaldwell | Pre-K–5 | 453 | Public | 6.9 mi |
| Skyway ElementaryCaldwell | Pre-K–5 | 795 | Public | 4.0 mi |
| Van Buren Elementary SchoolCaldwell | Pre-K–4 | 458 | Public | 2.9 mi |
| Washington Elementary SchoolCaldwell | Pre-K–4 | 481 | Public | 0.7 mi |
| West Canyon Elementary SchoolCaldwell | Pre-K–5 | 411 | Public | 4.3 mi |
| Wilson Elementary SchoolCaldwell | Pre-K–4 | 406 | Public | 0.3 mi |
| Heritage Community CharterCaldwell | K–8 | 512 | Charter | 1.4 mi |
| Mosaics Public SchoolCaldwell | K–8 | 527 | Charter | 3.0 mi |
| Sacajawea Elementary SchoolCaldwell | K–4 | 362 | Public | 3.0 mi |
| Thomas Jefferson CharterCaldwell | K–12 | 364 | Charter | 3.2 mi |
| Vision Charter SchoolCaldwell | K–12 | 760 | Charter | 3.8 mi |
| Southwest Idaho Juvenile DetentionCaldwell | 1–12 | 37 | Alternative Education | 1.7 mi |
| Jefferson Middle SchoolCaldwell | 5–6 | 778 | Public | 0.6 mi |
| Elevate AcademyCaldwell | 6–12 | 493 | Charter, Alternative Education | 2.1 mi |
| Promise AcademyCaldwell | 6–12 | 21 | Charter, Alternative Education | 9.7 mi |
| Sage Valley Middle SchoolCaldwell | 6–8 | 886 | Public | 5.0 mi |
| Summitvue Middle SchoolCaldwell | 6–8 | 836 | Public | 3.3 mi |
| Vallivue Middle SchoolCaldwell | 6–8 | 682 | Public | 2.5 mi |
| Notus Jr./Sr. High SchoolCaldwell | 7–12 | 157 | Public | 7.9 mi |
| Syringa Middle SchoolCaldwell | 7–8 | 695 | Public | 0.8 mi |
| Caldwell Senior High SchoolCaldwell | 9–12 | 1,400 | Public | 1.5 mi |
| Canyon Springs High SchoolCaldwell | 9–12 | 169 | Alternative Education | 1.9 mi |
| Vallivue AcademyCaldwell | 9–12 | 120 | Alternative Education | 3.6 mi |
| Vallivue High SchoolCaldwell | 9–12 | 1,252 | Public | 2.0 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Caldwell Adventist ElementaryCaldwell | Pre-K–8 | 52 | Seventh-day Adventist | 1.2 mi |
| Gem State Adventist AcademyCaldwell | 9–12 | 83 | Seventh-day Adventist | 2.8 mi |
| Gem State Adventist AcademyCaldwell | 9–12 | 78 | Seventh-day Adventist | 2.8 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Nampa and Notus.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.