Taxes & Insurance in Johnston
Johnston's tax and insurance picture combines Polk County's above-Iowa-median property tax burden with Iowa's shared statewide flat income tax and rising insurance costs.
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Learn moreAn above-Iowa-median property tax baseline
No Johnston-specific effective property tax rate distinct from Polk County's own median was found this pass -- this record uses Polk County's real, disclosed median effective rate of approximately 1.71% (Ownwell), above Iowa's own statewide median of approximately 1.55%. Johnston's own city levy ran $11.4379 per $1,000 of taxable valuation for FY2026 (unchanged from FY2025), representing approximately 30.7% of a resident's total residential property tax bill (base record).
Iowa's real, current flat income tax
Iowa's real, current flat individual income tax rate ran 3.8% in 2026, reached in 2025 under Senate File 2442 (base record).
Rising statewide insurance costs
No Johnston-specific homeowners-insurance figure was found this pass; Iowa's statewide average premium ran approximately $2,381-$2,664/year (2026), approximately 31% below a cited national average of ~$3,467/year, though Iowa premiums rose a real, documented 28% during 2025 statewide (base record).
Key takeaways
- Polk County's own median effective property tax rate (~1.71%) runs above Iowa's statewide median.
- Iowa's real, current flat income tax rate is 3.8%, reached in 2025.
- Iowa homeowners-insurance premiums remain below the national average but rose a real 28% during 2025 statewide.
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