Population

76,629

US Census estimate, July 2025

Median home value

$367,300

Owner-occupied units

Caldwell, ID

Idaho · 43.646° N, 116.659° W · 25 sq mi

Caldwell is a city in Idaho, with a population of 76,629 and about 3,017 residents per square mile. The median household earns $73,058 a year, and the median home is worth $367,300.

Conditions

Humidity & wind

—

UV index

—

Sunrise & sunset

—

Local time

—

Forgotten Flicks movie T-shirts on TeePublic

Size & density

Land area

25 sq mi

Water excluded

Population density

3,017

People per square mile

Rank by population

#526

Of cities on this site

Rank by area

#539

Of cities on this site

Money & housing

Median household income

$73,058

US median ≈ $78,538

Median gross rent

$1,264

Per month

Homeownership

73%

US ≈ 65%

Average commute

24.6 min

One way

People

Median age

31.5

US median 39.1

Bachelor's degree +

19.5%

Age 25 and over

Foreign born

12.6%

Households

21,573

3.01 people each

Climate · 2021–2025 average

Clear days 62^/yr Mostly or fully clear sky

Days with rain 107^/yr 0.01 in or more

Days with snow 43^/yr

Days above 90° 68^/yr

Below freezing 103^/yr

Annual rainfall 13.7ⁱⁿ Inches per year, scaled to 70 in — the rows above count days

Warmest month

July

Average high 98°F

Coldest month

January

Average low 25°F

What people here do for work

Education & health care 21^%

Construction 13.7^%

Retail trade 12.5^%

Professional & business services 9.7^%

Top four industries · share of all workers · ACS 2024

Wealthiest person in Idaho

Name

Frank VanderSloot

Forbes, Apr 2025

Net worth

$3.2B

As of 25 Apr 2025 — not live

Lives in

Idaho Falls

Source of wealth

Nutrition, wellness

Compiled from public reporting, not from an official dataset, and not independently verified.

Largest employer in Idaho · private sector

Employer

Micron Technology

Sector

Semiconductors

Compiled from public reporting, not from an official dataset, and not independently verified. Government employers are excluded.

Largest public company in Idaho

Company

Albertsons

Revenue

$79.2B

Fiscal year 2024

Headquarters

Boise

Ticker

ACI

Compiled from public reporting, not from an official dataset, and not independently verified.

State of Idaho

State bird

Mountain Bluebird

State flower

Syringa

State capital

Boise

Nickname

The Gem State

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