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Declo, Idaho
Declo.png
Location of Declo in Cassia County, Idaho.
Location of Declo in Cassia County, Idaho.
Declo, Idaho is located in the United States
Declo, Idaho
Declo, Idaho
Location in the United States
Country United States
State Idaho
County Cassia
Area
 • Total 0.28 sq mi (0.72 km2)
 • Land 0.28 sq mi (0.72 km2)
 • Water 0.00 sq mi (0.00 km2)
Elevation
4,213 ft (1,284 m)
Population
 (2010)
 • Total 343
 • Density 1,332.13/sq mi (514.76/km2)
Time zone UTC-7 (Mountain (MST))
 • Summer (DST) UTC-6 (MDT)
ZIP code
83323
Area code(s) 208
FIPS code 16-20980
GNIS feature ID 2410308

Declo is a small city located in Cassia County, Idaho, in the United States. It is part of the area around Burley, Idaho. In 2020, about 338 people lived there. This was a small decrease from 343 people in 2010.

History of Declo

The city of Declo was not always called Declo. It was first known as Marshfield. In 1916, the name was changed. The main Post Office asked the community to pick a new name with five letters or less.

To choose the new name, they used the last initials of the first five men who entered the Post Office. These men were August Detlef, George Eldredge, Hyrum Lewis, James Cooley, and Carl Osterhout. The Post Office liked "Declo" better than "Delco," and so the city was named Declo.

The Simplot Company's Start

The J. R. Simplot Company is a very well-known company today. It was started near Declo in 1923 by a 14-year-old named J. R. Simplot. He had moved to the area with his family when he was very young. Even though the company started here, its main office is now in Boise.

Geography of Declo

Declo is a small city, covering an area of about 0.28 square miles (0.72 square kilometers). All of this area is land, with no water.

The Hillside Letter 'D'

If you look to the southeast of Declo, you might see a large letter "D" on a hillside. This is a special kind of landmark called a Hillside Letter. It's a fun way to mark the town from a distance!

Declo's Climate

Declo has what is called a semi-arid climate. This means it's usually quite dry, but not a complete desert. It gets some rain, but not a lot. On climate maps, this type of weather is often shown as "BSk."

People of Declo

Declo has seen its population grow over the years. Here's a quick look at how many people have lived there:

Historical population
Census Pop.
1920 22
1930 196 790.9%
1940 238 21.4%
1950 219 −8.0%
1960 237 8.2%
1970 251 5.9%
1980 276 10.0%
1990 279 1.1%
2000 338 21.1%
2010 343 1.5%
2019 (est.) 369 7.6%
U.S. Decennial Census

Life in Declo (2010 Census)

In 2010, there were 343 people living in Declo. These people lived in 115 different homes, and 87 of those were families. The city had about 1225 people per square mile.

Many homes in Declo had children under 18 living there. About half of the homes were married couples living together. The average age of people in Declo was about 29.8 years old. Many residents, about 35.6%, were under 18 years old.

Education in Declo

Students in Declo attend schools that are part of the Cassia County School District.

The city has several schools for different age groups:

  • Declo Elementary School (for younger students)
  • Declo Junior High School (for middle school students)
  • Declo High School (for high school students)

Notable People from Declo

Some interesting people have come from Declo:

  • Kelly Anthon: He is a leader in the Idaho Senate, which is part of the state government.
  • J.R. Simplot: He was the person who started the J. R. Simplot Company when he was just 14 years old.

See also

Kids robot.svg In Spanish: Declo para niños

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