City vs city
Caldwell vs Melba, Idaho
Caldwell has about 116.9 times as many people as Melba. They are about 22 miles apart in a straight line.
The basics
Population
Source: U.S. Census Bureau population estimates (Vintage 2024) · July 1, 2024 estimate
73,088
625
County
Source: U.S. Census Bureau and USGS Geographic Names Information System · Checked Oct 3, 2026
Canyon County
Canyon County
Elevation
Source: USGS Geographic Names Information System · Checked Oct 3, 2026
2,400 ft
2,700 ft
Distance to Boise (straight line)
Source: Straight line between the two town centers (USGS and Census coordinates) · Checked Oct 3, 2026
24 mi
23 mi
Price level (U.S. average = 100)
Source: U.S. Bureau of Economic Analysis regional price parities, all items, for the metro area (via FRED) · 2024 data, released Feb 19, 2026
98.4
98.4
Public schools
Source: NCES Common Core of Data, operating public schools · 2024-25 school year
27
1
Work and getting around town
Local businesses listed
Source: Local businesses listed on Treasure Idaho · Updated Oct 1, 2026
12
1
Outdoors
Trails within 15 miles
Source: Trails listed on Treasure Idaho (OpenStreetMap and public land agencies) · Checked Oct 2, 2026
13
45
Things to do within 15 miles
Source: Things to do listed on Treasure Idaho (OpenStreetMap and USGS) · Checked Oct 2, 2026
14
20
Allergies, in a typical year
Spring tree pollen
Source: National Allergy Bureau daily pollen counts, CDC release 2003 to 2024 (Boise, Twin Falls, Coeur d'Alene stations) · Typical year; how it is rated is on each city page
Moderate
Moderate
Early-summer grass pollen
Source: The Allergy Group (Boise) grass counts; NAB station reports for North Idaho · Typical year; how it is rated is on each city page
High
High
Fall weed and sagebrush pollen
Source: National Allergy Bureau daily pollen counts, CDC release 2003 to 2024 (Boise, Twin Falls, Coeur d'Alene stations) · Typical year; how it is rated is on each city page
High
High
Wildfire smoke (days a year over AQI 100)
Source: EPA AirData: annual AQI by county · 2021 to 2025 average
Moderate, 6.4
Moderate, 6.4
Only figures both towns have are shown. Counts of communities, builders, jobs, businesses and stays are what Treasure Idaho lists today, not every one in town. Allergy ratings are typical, general guidance, not medical advice; each city page shows how its ratings were worked out.