County profile · Idaho
Jefferson County, ID market data
Population, household spending and competition for 56 business types in Jefferson County, each scored against other counties.
- Population, 2025
- 35,297
- +13.6% since 2020
- Households
- 10,199
- Median household income
- $86,679
- +37.5% vs. 2015–2019, before inflation
- Median home value
- $408,400
- Jobs located here
- 8,448
- Highest market score
- 94
- Sit-down restaurants, #8 of 2,405 scored counties
A site report maps the competitors on map listings around any address in Jefferson County by name and distance, and the households and spending within reach. Or open the report at the center of Jefferson County. Signed out, you see a blurred preview; on an account, each report is one action.
Free10 actions over 3 days, no cardSurvey estimates 2020–2024 · population estimates 2025 · official business counts 2023 · map listings September 2026 · Data credits · How we measure
What this means
An estimated 35,297 people live in Jefferson County, in 10,199 households. Population estimates show Jefferson County grew 13.6% from 2020 to 2025, faster than the U.S. (+3.1%). The median household income in Jefferson County is $86,679 a year, 7% above the U.S. median of $80,734. That rose 37.5% from the 2015–2019 survey, before inflation.
Set against the U.S., households in Jefferson County spend the most on vehicle maintenance and repairs (an index of 154, where 100 is the U.S. average) and the least on clothing, shoes and related services (86).
The highest Groundwork market scores in Jefferson County are for sit-down restaurants (94), restaurants and cafes (89) and grocery and convenience stores (89). Jefferson County ranks #8 of 2,405 scored counties for sit-down restaurants.
Jefferson County is part of the Idaho Falls metro area. For its number of households, Jefferson County has the most map listings, relative to the U.S., for physical therapy clinics (81% above the U.S. rate) and the fewest for real estate agents and brokers (65% below the U.S. rate).
All 56 business types in Jefferson County
Highest Groundwork market score first. Each score compares Jefferson County with other counties for that business type, from 0 to 100. Spending per listing divides a whole spending line (all vehicle repairs, all eating out) by one type’s listings: the demand for each competitor, not a business’s revenue. Compare it across markets with its index, where 100 is the U.S. figure for the same type; the real estate types, whose line is all housing costs, show the index only. How the score works.
| Business type | Score | Rank among counties | Listings | Per 10k households | Spending per listing | Spending per listing vs. U.S. (100) | Official establishments |
|---|---|---|---|---|---|---|---|
| Sit-down restaurants | 94 | #8 of 2,405 | 28 | 27.5 | $1.4M | 217 | 5 |
| Restaurants and cafes | 89 | #31 of 2,405 | 63 | 61.8 | $640K | 173 | 29 |
| Grocery and convenience stores | 89 | #56 of 2,402 | 13 | 12.7 | $4.8M | 142 | Under 3 |
| Spas and skin care | 87 | #19 of 1,769 | 6 | 5.9 | $1.7M | 197 | Under 3 |
| Convenience stores | 87 | #70 of 2,261 | 6 | 5.9 | $10.4M | 132 | Under 3 |
| Fast food and sandwich shops | 85 | #58 of 2,222 | 9 | 8.8 | $4.5M | 147 | 15 |
| Salons, barbers and spas | 84 | #44 of 2,385 | 29 | 28.4 | $357K | 168 | 5 |
| Gas stations | 81 | #143 of 2,358 | 16 | 15.7 | $2.4M | 101 | 10 |
| Hair salons | 80 | #81 of 2,339 | 18 | 17.6 | $575K | 134 | 4 |
| Primary care and pediatrics | 79 | #100 of 1,656 | 5 | 4.9 | $2.6M | 149 | 9 |
| Clothing, shoes and laundry | 77 | #187 of 2,210 | 10 | 9.8 | $1.8M | 205 | Under 3 |
| Auto repair shops | 75 | #215 of 2,378 | 25 | 24.5 | $600K | 135 | 14 |
| Real estate agents and brokers | 74 | #100 of 2,176 | 11 | 10.8 | Index only | 306 | 15 |
| Real estate | 74 | #124 of 2,229 | 14 | 13.7 | Index only | 302 | 22 |
| Clothing and shoe stores | 74 | #260 of 2,087 | 8 | 7.8 | $2.3M | 178 | Under 3 |
| Child care and preschools | 73 | #201 of 1,611 | 6 | 5.9 | $1.1M | 107 | 6 |
| Pizza | 73 | #232 of 2,090 | 9 | 8.8 | $4.5M | 88 | 15 |
| Coffee shops and cafes | 71 | #259 of 2,063 | 5 | 4.9 | $8.1M | 218 | 9 |
| Auto repair and car care | 70 | #366 of 2,401 | 46 | 45.1 | $326K | 121 | 21 |
| Lawn, cleaning and pest control | 66 | #310 of 1,771 | 5 | 4.9 | $2.7M | 158 | 22 |
| Doctors, dentists and clinics | 66 | #477 of 2,394 | 43 | 42.2 | $308K | 202 | 35 |
| Dentists and orthodontists | 64 | #434 of 1,886 | 8 | 7.8 | $1.7M | 168 | 12 |
| Landscaping and lawn care | 62 | #431 of 1,493 | 5 | 4.9 | $2.7M | 91 | 10 |
| HVAC and plumbing | 61 | #451 of 1,707 | 5 | 4.9 | $5.8M | 121 | 21 |
| Car washes and detailing | 57 | #550 of 1,451 | 7 | 6.9 | $2.1M | 85 | 3 |
| Gyms | 56 | #712 of 1,792 | 14 | 13.7 | $769K | 59 | Under 3 |
| Pet businesses | 52 | #1,021 of 2,200 | 17 | 16.7 | $584K | 66 | 8 |
| Gyms, studios and classes | 48 | #1,193 of 2,088 | 24 | 23.5 | $448K | 68 | 6 |
| Bakeries and dessert shops | 46 | #1,095 of 1,889 | 12 | 11.8 | $3.4M | 81 | 9 |
| Martial arts and dance studios | 43 | #874 of 1,334 | 8 | 7.8 | $1.3M | 67 | 6 |
| Physical therapy | 36 | #1,093 of 1,422 | 10 | 9.8 | $1.3M | 55 | 11 |
| Home repair trades | 36 | #1,684 of 2,057 | 19 | 18.6 | $1.5M | 62 | 49 |
| Electricians | 33 | #948 of 1,160 | 6 | 5.9 | $4.8M | 40 | 21 |
| Roofing and gutters | 32 | #970 of 1,177 | 8 | 7.8 | $3.6M | 43 | 7 |
| Pet grooming and boarding | Not scored | Not scored | 4 | 3.9 | $2.5M | 98 | 3 |
| Tire shops | Not scored | Not scored | 4 | 3.9 | $3.8M | 150 | 3 |
| Veterinarians | Not scored | Not scored | 4 | 3.9 | $2.5M | 91 | 5 |
| Chiropractors | Not scored | Not scored | 3 | 2.9 | $4.4M | 184 | Under 3 |
| Insurance agencies | Not scored | Not scored | 3 | 2.9 | $9.1M | 725 | 12 |
| Collision repair and body shops | Not scored | Not scored | 2 | 2.0 | $7.5M | Too few | 4 |
| Grocery stores | Not scored | Not scored | 2 | 2.0 | $31.2M | Too few | Under 3 |
| Nail salons | Not scored | Not scored | 2 | 2.0 | $5.2M | Too few | Under 3 |
| Optometrists and eye care | Not scored | Not scored | 2 | 2.0 | $6.6M | Too few | 3 |
| Pet stores | Not scored | Not scored | 2 | 2.0 | $5M | Too few | Under 3 |
| Yoga, Pilates and fitness studios | Not scored | Not scored | 2 | 2.0 | $5.4M | Too few | Under 3 |
| Barbershops | Not scored | Not scored | 1 | 1.0 | $10.3M | Too few | Under 3 |
| Dry cleaners | Not scored | Not scored | 1 | 1.0 | $18.1M | Too few | Under 3 |
| Funeral homes | Not scored | Not scored | 1 | 1.0 | $1.3M | Too few | Under 3 |
| Home inspectors | Not scored | Not scored | 1 | 1.0 | Index only | Too few | Under 3 |
| Laundromats | Not scored | Not scored | 1 | 1.0 | $18.1M | Too few | Under 3 |
| Mortgage brokers and lenders | Not scored | Not scored | 1 | 1.0 | Index only | Too few | Under 3 |
| Oil change and quick lube | Not scored | Not scored | 1 | 1.0 | $15M | Too few | Under 3 |
| Property management | Not scored | Not scored | 1 | 1.0 | Index only | Too few | 4 |
| House cleaning | Not scored | Not scored | 0 | 0.0 | None listed | None listed | 12 |
| Pest control | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
| Urgent care and walk-in clinics | Not scored | Not scored | 0 | 0.0 | None listed | None listed | Under 3 |
Household spending in Jefferson County
What households here spend in a year on each line, in total and per household, with the index against the U.S. average (100).
| Spending line | A year, all households | Per household | Index vs. U.S. (100) |
|---|---|---|---|
| Vehicle maintenance and repairs | $15M | $1,471 | 154 |
| Gasoline and other fuels | $38.5M | $3,773 | 145 |
| Food away from home | $40.3M | $3,952 | 97 |
| Groceries | $62.4M | $6,113 | 97 |
| Personal care products and services | $10.3M | $1,014 | 101 |
| Child care and other personal services | $6.5M | $633 | 109 |
| Memberships, classes and admissions | $10.8M | $1,055 | 107 |
| Medical and dental services | $13.2M | $1,298 | 101 |
| Pets | $9.9M | $973 | 107 |
| Clothing, shoes and related services | $18.1M | $1,770 | 86 |
| Vehicle insurance | $27.3M | $2,676 | 137 |
| Home repairs, maintenance and insurance | $28.8M | $2,824 | 94 |
| Lawn care, cleaning and other household services | $13.3M | $1,302 | 92 |
| Rent and homeowner costs | $183.3M | $17,976 | 108 |
Household spending is estimated from the incomes of the households in each neighborhood, using what households at each income spent nationally in 2024, adjusted for the region. It counts what residents spend, wherever they spend it.
Population and households in Jefferson County
- Population, 2025 estimate
- 35,297+13.6% since 2020
- Households
- 10,199
- Median age
- 32.9
- Homes lived in by their owners
- 83%
- Vehicles per household
- 2.6
- Land area
- 1,094 sq. mi.
- People per square mile
- 30
- Median household income
- $86,679+37.5% vs. 2015–2019, before inflation
- Average household income
- $99,354
- Median home value
- $408,400
- Jobs located here
- 8,448
- Daytime population
- 27,194Residents who don’t work, plus everyone whose job is here
Looking at a specific site in Jefferson County?
These figures cover the whole county. A site report draws rings around one address and counts what’s inside them: households, spending, jobs, and the competitors on map listings by name and distance, for any of the 56 business types.
Or open the report at the center of Jefferson County. Signed out, you see a blurred preview; on an account, each report is one action.
Free10 actions over 3 days, no cardRelated markets
Nearest counties in Idaho 8
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- Bonneville County, ID129,523 people
- Fremont County, ID13,943 people
- Bingham County, ID49,664 people
- Clark County, ID849 people
- Teton County, ID12,425 people
- Bannock County, ID89,454 people
- Butte County, ID2,684 people
Questions
How fast is Jefferson County, ID growing?
Population estimates put Jefferson County at 35,297 people in 2025, up 13.6% since 2020, faster than the U.S. (+3.1%). It has 10,199 households. Against the 2015–2019 survey, median household income rose 37.5%, before inflation.
How much do households in Jefferson County, ID spend?
Households in Jefferson County spend about $183.3M a year on rent and homeowner costs, $62.4M on groceries and $40.3M on food away from home. Relative to the U.S., household spending in Jefferson County runs highest on vehicle maintenance and repairs (an index of 154, where 100 is the U.S. average) and lowest on clothing, shoes and related services (86).
Which business types have the highest market scores in Jefferson County, ID?
Of the business types scored in Jefferson County, sit-down restaurants (94), restaurants and cafes (89) and grocery and convenience stores (89) have the highest Groundwork market scores. For sit-down restaurants, that ranks #8 of 2,405 scored counties.
How does Jefferson County, ID compare with the U.S.?
Median household income in Jefferson County is $86,679, 7% above the U.S. median of $80,734. The population rose 13.6% from 2020 to 2025, against +3.1% for the U.S. The median home value is $408,400, against $332,700 for the U.S. Against the U.S., map listings per household run highest for physical therapy clinics (81% above the U.S. rate) and lowest for real estate agents and brokers (65% below the U.S. rate).
What is the Groundwork market score?
The Groundwork market score runs from 0 to 100 and compares a market with others of its kind for one business type: states with states, metro areas with metro areas, small-town markets and counties with their own. It weighs household spending per competitor (35%), households per business with payroll (25%), population growth (20%) and spending power (20%), each ranked against those peers. A higher score means that, taken together, the market has more household spending and more households for each business already there, faster population growth and more spending per household than similar markets. It describes a market, not any one site or deal. 34 of the 56 business types have a score in Jefferson County, each ranked against other counties.
How can I see the market around a specific site?
Run a Groundwork site report on an address in Jefferson County. It maps the competitors on map listings near the site and sizes the households and spending within the distance you choose. New accounts get 10 actions over 3 days, no card.
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Screening a site or an acquisition in Jefferson County?
A site report maps the competitors on map listings near an address and sizes the households and spending around it.
The button opens the report at the center of Jefferson County. Signed out, you see a blurred preview; on an account, each report is one action.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
Figures are estimates for research only. Not investment or real estate advice.