The capital of Idaho is Boise City.
The Postal Code for Idaho: ID
Typical abbreviations for Idaho: Ida., Id.
Time Zone:
The area north of the Salmon River and west of the border between Idaho & Lemhi Counties lies in the Pacific Time (PST/PDT) zone
and observes daylight saving time.
The area south of the Salmon River and east of the border between Idaho & Lemhi Counties lies in the Mountain Time (MST/MDT) zone
and observes daylight saving time.
| Note: |
Starting in 2007, Daylight Savings Time will be begin 3 weeks earlier and end 1 week later.
Click here for details. |
When the people of Idaho refer to themselves: Idahoan
Population: According to the 2006 Census estimates, Idaho has a population of 1,466,465 people.
This represents 0.49% of the national total, making it the 39th most populous state.
The following are population changes since the last Census. The population counts after year 2000 are estimates.
| Year | Population | Change |
| 2006 | 1,466,465 | +2.60% since 2005 |
| 2005 | 1,429,367 | +2.50% since 2004 |
| 2004 | 1,394,524 | +2.01% since 2003 |
| 2003 | 1,367,034 | +1.69% since 2002 |
| 2002 | 1,344,266 | +1.73% since 2001 |
| 2001 | 1,321,446 | +2.12% since 2000 |
| 2000 | 1,293,953 | Last Census Count |
Area:
The area of Idaho is 83,570 square miles (216,445.31 km²).
This represents 2.20% of the national total.
Idaho ranks as the 14th largest state.
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Density:
The population density of Idaho is 17.72 people per square mile (6.84 people/km²).
Idaho ranks 44th in population density.
Nicknames for Idaho: "The Gem State"; "The Spud State"
State Motto: "Esto Perpetua" (Let it be perpetual)
State Bird: Mountain Bluebird (sialia currucoides)
State Tree: Western White Pine (pinus monticola pinaceae)
State Flower: Syringa Mock Orange (philadelphus lewisii)
State Song: "Here We Have Idaho"
Statehood:
Idaho became the 43rd state on Jul 3, 1890.
Useful State Links
The state website for Idaho can be found at:
The portal for Idaho tourism:
For information about Idaho fishing regulations and licenses requirements:
For information about Idaho hunting regulations and licenses requirements:
Communities Ranked by Population (Top-15)
 
| Rank | City | 2005
Population | National
Rank |
| 1 | Boise City | 193,161 | 104 |
| 2 | Nampa | 71,713 | |
| 3 | Pocatello | 53,372 | |
| 4 | Idaho Falls | 52,338 | |
| 5 | Meridian | 52,240 | |
| 6 | Coeur d'Alene | 40,059 | |
| 7 | Twin Falls | 38,630 | |
| 8 | Lewiston | 31,081 | |
| 9 | Caldwell | 34,433 | |
| 10 | Moscow | 21,862 | |
| 11 | Post Falls | 23,162 | |
| 12 | Rexburg | 26,265 | |
| 13 | Eagle | 17,338 | |
| 14 | Mountain Home | 11,565 | |
| 15 | Garden City | 11,424 | |
Miscellaneous Information
| Census Region: 4 (West) |
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| Census Division: 8 (Mountain) |
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| State FIPS-55 Code: 16 |
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| Office of Management and Budget (OMB): Region X / Region 10 |
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| ISO-3166-2 Code: US-ID |
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