Cities in Jerome County, Idaho by Population (2024)

There are 6 cities in Jerome County, Idaho.

Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)

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City	Rank	2024 Population	2020 Population	Annual Change	Density (/mi²)	Area (mi²)	Type
Twin Falls	1	55,896	52,083	1.74%	2,853	19.6	City
Jerome	2	13,388	12,376	1.93%	2,366	5.7	City
Paul	3	1,900	1,198	10.14%	2,561	0.7	City
Hazelton	4	815	806	0.25%	2,022	0.4	City
Eden	5	404	394	0.5%	1,295	0.3	City
Hollister	6	271	245	2.26%	253	1.1	City

Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.

What is the largest city in Jerome County, Idaho?

Twin Falls is the largest city in Jerome County.

What is the smallest city in Jerome County, Idaho?

Hollister is the smallest city in Jerome County.

How many cities are in Jerome County?