Knox County · Kentucky
ZIP code 40906
- Population
- 10,560
- Median income
- $22,355
- Median home
- $120,900
- Sales tax
- 6%
ZCTA residents
Household, past 12 months
Owner-occupied value
Kentucky state rate
Quick answer
ZIP 40906 sits in Knox County, Kentucky and is home to 10,560 people. Median household income is $22,355, the median home is worth $120,900 and median gross rent is $660. 62.3% of households own their home, and purchases are taxed at 6% (Kentucky state rate).
- County
- Knox County
- State
- Kentucky (KY)
- Area codes
- Not published
- Metro area
- Outside covered metros
FIPS 21121
779 ZIPs covered
No NANPA match for this ZIP
Rate jurisdiction used for tax
The numbers for 40906
American Community Survey 2019-2023 ACS 5-year estimates for this ZCTA.
- Population
- 10,560ZIP 40906 residents
- Median household income
- $22,355Past 12 months, inflation adjusted
- Median home value
- $120,900Owner-occupied units
- Median gross rent
- $660Rent plus utilities, monthly
- Median age
- 38.3 yrsAll residents
- Homeownership rate
- 62.3%Owner-occupied households
Sales tax in 40906
What a purchase inside this ZIP costs at checkout.
Kentucky levies 6% statewide with no local add-ons. Check the county page for the local component before you quote a price.
Affordability in this ZIP
Derived from the Census medians above — indicative, not an offer.
A rent burden above 30% is the federal threshold for cost-burdened households, and a price-to-income multiple above 4× is generally considered a stretched housing market. The mortgage figure is principal and interest only — taxes, insurance and HOA dues are extra.
How 40906 compares
ZIP 40906 against the median ZIP in Knox County and across Kentucky.
| Measure | ZIP 40906 | County median | State median | vs state |
|---|---|---|---|---|
| Median household income | $22,355 | $43,472 | $53,906 | -59% |
| Median home value | $120,900 | $82,400 | $130,850 | -8% |
| Median gross rent | $660 | $667 | $791 | -17% |
| Population | 10,560 | 675 | 1,457 | +625% |
Medians are computed across the 15 ZIP areas in Knox County and the 779 ZIP areas in Kentucky.
Statewide rank
Where this ZIP places among all 779 Kentucky ZIP areas.
- Income
- #624
- Home value
- #364
- Population
- #129
richer than 3% of 641 state ZIPs
above 44% of 654 state ZIPs
larger than 83% of 779 state ZIPs
Comparable ZIP codes
Kentucky ZIP areas with almost the same household income.
Nearby ZIP codes
Other ZIP codes filed under Knox County.
ZIP 40906 questions
Common questions about this ZIP code.
- Where is ZIP code 40906?
- ZIP 40906 lies mostly in Knox County, Kentucky. County assignment follows the largest share of land area, so a ZIP straddling a county line is filed under its dominant county.
- What sales tax do I pay in 40906?
- Kentucky charges 6% statewide.
- Is 40906 expensive to live in?
- Median rent runs $660 a month, about 35% of median household income, and the median home is worth $120,900 — -8% against the typical Kentucky ZIP.
- Is a ZCTA the same as a postal ZIP code?
- Not exactly. The Census builds ZIP Code Tabulation Areas from the ZIP codes of addresses inside each census block, so a ZCTA can differ slightly from the USPS delivery route of the same number, and PO-box-only ZIPs have no ZCTA at all.
Keep going
Related pages for this area.
Sources & transparency
- US Census Bureau, ACS 2019-2023 5-year estimates — 2019-2023 ACS 5-year — population, income, housing
- Census 2020 ZCTA-to-county relationship file — County assignment by largest land-area overlap
- Kentucky Department of Revenue — Sales tax rates and local add-ons
Last reviewed December 2024. Figures are published for reference and can change; verify with the source agency before filing or contracting. How we build and check this data.