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Firth, ID Homes for Sale | Realty.com

Start here

Homes for sale by state
Home buying tips
Before you start looking
The buying timeline

Afford it

Today's mortgage rates
Mortgage calculator
How much can I afford?
Get pre-approved

Make the deal

Writing a winning offer
Inspections & appraisals
Closing costs, itemized
Find a buyer's agent

Save search Advertise Sign In

Saved homes Saved searches Your tours Your inquiries Recently viewed Account settings

Safety & registry resources

Review official public-safety information for any area from these government sources:

U.S. Dept. of Justice National Sex Offender Public Website (NSOPW)
FBI: state sex-offender registry directory

3 beds New construction With a pool

Selling Options

What's my home worth?
Compare selling options
Get an instant cash offer
Buy before you sell

Resources

How selling works
When should I sell?
Home selling tips
Pricing your home
What's worth fixing first
Find a seller's agent

1 listing

Homes for Sale in Firth, ID

Homes for Sale in Firth, ID

1 Listing

Homes for Sale in Firth, ID

1 Listing

Your local brokerage

TO

Thomas O'Leary

Realty.com

Lic. #DB44779

27Active
$3,000,000
4 bd · 2 ba · 3,016 sqft
848 N Hwy 91, Firth, ID
Kit Carney · Keller Williams Sun Valley Southern Idaho
Your local brokerage
Thomas O'Leary
Realty.com
Lic. #DB44779
Call Thomas

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L. Custen Realty, Inc. d/b/a Realty.com/L. Custen Realty CT, LLC d/b/a Realty.com (Tom O’Leary-Broker)(CT properties only), 8323 Southwest Freeway, Suite 900, Houston, Texas 77074

The information provided by this website is for the personal, non-commercial use of consumers and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Listing data is derived from various Multiple Listing Services; each source MLS and its required disclaimer are shown with the listings on the applicable page. Realty.com is an independently owned and operated brokerage.

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Listing data & MLS disclosures

Intermountain MLS: IDX information is provided exclusively for consumers' personal, non-commercial use, that it may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. IMLS does not assume any liability for missing or inaccurate data. All MLS listings are marked with the IDX icon for Intermountain MLS (IMLS). Information provided by IMLS is deemed reliable but not guaranteed. Copyright © 2026 Intermountain MLS (IMLS). All rights reserved.

New construction
With a pool

Firth, ID community profile

Population: 542
Median income: $60,714
Housing units: 203
People per sq. mi.: 0.9
Area: 586.1 sq. mi.

Source: HJN community data

Nearby areas

ZIP codes

83401 (3)
83221 (2)
83236 (1)
83402 (1)
83404 (1)

Cities

Idaho Falls (5)
Blackfoot (2)

Firth housing market

July 2026 · This period is still settling

Housing stock — every home in the area, not only the ones selling or listed · Assessor records, as of Jul 13, 2026

Median home size: 1,421 sq. ft.