54423 Property Tax Rate
Custer, Wisconsin · Part of Portage County
Effective Tax Rate
1.32%
20.4% above state avgMedian Annual Tax
$3,850
$321/mo escrow
Estimate Your Tax
Annual Tax
$3,850
Monthly
$321
Eff. Rate
1.32%
Buyer decision brief
What ZIP 54423 means for your housing budget
Use this ZIP page to compare recurring tax burden before you compare listing prices. The numbers below are Census ZCTA estimates, so they are strongest for neighborhood comparison and weakest for parcel-specific tax planning.
Monthly escrow signal
$321/mo
Based on median annual tax paid
State context
0.08 percentage points below the Wisconsin average
Wisconsin average: 1.40%
Data confidence
High confidenceThe Census margin of error is $366, about 10% of the median tax estimate.
Verify before you offer
- Confirm parcel assessed value with Portage County assessor.
- Check homestead, senior, veteran, and disability exemptions.
- Ask whether purchase triggers reassessment or value-cap reset.
- Review school district and special assessment boundaries.
Lower-rate similar ZIPs
This is informational content, not tax, legal, or mortgage advice. Local assessor records remain the source of truth for a specific property.
Data confidence ledger
Can you trust ZIP 54423 for comparison?
ACS vintage
2019-2023 ACS 5-Year Estimates
Five-year Census ZCTA estimates.
ZCTA caveat
Census area, not parcel boundary
USPS ZIP routes and taxing districts can differ inside the same area.
Field completeness
3/3 required fields
Median tax, home value, and derived rate are present.
MOE status
Strong ACS confidence
$366 tax MOE, 10% of the median tax estimate.
Last site refresh
March 10, 2026
Dataset and page-quality audit run locally before publication.
County fallback
County context only
Portage County is used for assessor verification and broader context.
Tax bill anatomy
What can change your actual bill in ZIP 54423
Use the ZIP estimate to compare neighborhoods, then verify these parcel-level inputs before relying on a payment estimate.
Assessed value
The ZCTA median home value is $290,700, but your bill starts with the local assessed value for a specific parcel.
Effective rate
The displayed rate is 1.32%, derived from median tax paid divided by median home value.
Exemptions
Homestead, senior, veteran, disability, and local exemptions can reduce taxable value. Confirm eligibility before estimating escrow.
Reassessment
A purchase can change assessed value depending on Wisconsin and county rules. Ask how sale price affects the next assessment cycle.
Escrow impact
The median tax paid in this ZCTA equals about $321 per month before insurance, HOA dues, or special assessments.
Assessor verification
Portage County assessor or tax collector records are the source of truth for parcel taxes, appeal windows, and exemptions.
How ZIP 54423 Compares
Median Annual Property Tax
ZIP 54423
1.32%
Effective rate
Wisconsin Avg
1.40%
Effective rate
National Avg
1.10%
Effective rate
State Ranking
Property Tax Rank in Wisconsin
Lower than 60% of ZIP codes in Wisconsin(40th percentile, 761 ZIPs compared)
Property Tax Analysis
Property Tax Insights for ZIP 54423
Property owners in ZIP code 54423 (Custer, Wisconsin) pay a median of $3,850/year in property taxes on homes valued at $290,700. This translates to an effective tax rate of 1.32%, which is 6% below the Wisconsin state average of 1.40%.
The monthly property tax burden for a median-valued home in 54423 is approximately $321, which factors into escrow payments on mortgages. This ZIP code is located within Portage County. This is $651 more than the Wisconsin average of $3,199/year.
Compared to similar ZIP codes in Wisconsin, 54423 has lower property taxes. ZIP codes with similar effective rates include 54015 (1.32%) and 54235 (1.32%).
In Custer, property taxes represent approximately 3.3% of the median household income of $116,941, providing context for the relative tax burden on homeowners in this area.
If you're considering purchasing a home in 54423, keep in mind that property taxes are based on the assessed value assigned by the local assessor, which may differ from the purchase price. In some states, properties are reassessed at or near the sale price upon transfer of ownership. For the most current tax information for a specific property, consult Portage County's tax assessor directly.
Frequently Asked Questions
What is the property tax rate in ZIP code 54423?
How much are property taxes in Custer, WI (54423)?
How does ZIP 54423 compare to the Wisconsin average?
What is the median home value in ZIP 54423?
What county is ZIP code 54423 in?
Margin of Error
The median property tax estimate for this ZIP code has a margin of error of ±$366. ZCTA-level data has wider margins than county-level estimates due to smaller sample sizes.
County-Level Data
ZIP code 54423 is part of Portage County, Wisconsin. View the full county profile for broader context and more data.
View Portage County on TaxByCounty →Why compare these ZIPs?
Better comparison set for ZIP 54423
Each ZIP highlights a homebuyer tradeoff: lower rate, stronger value context, shared county rules, city boundary changes, or nearby missing data.
54458
Nelsonville, WI
0.15 percentage points lower than ZIP 54423.
Rate
1.18%
Tax
$1,643
Quality
67
54407
Amherst Junction, WI
0.12 percentage points lower than ZIP 54423.
Rate
1.21%
Tax
$3,697
Quality
82
54921
Bancroft, WI
0.08 percentage points lower than ZIP 54423.
Rate
1.24%
Tax
$2,374
Quality
82
54443
Junction City, WI
0.02 percentage points lower than ZIP 54423.
Rate
1.30%
Tax
$3,367
Quality
77
54473
Rosholt, WI
0.02 percentage points lower than ZIP 54423.
Rate
1.30%
Tax
$2,989
Quality
82
54406
Amherst, WI
0.01 percentage points lower than ZIP 54423.
Rate
1.31%
Tax
$3,508
Quality
82
54545
Manitowish Waters, WI
0.72 percentage points lower than ZIP 54423.
Rate
0.60%
Tax
$3,897
Quality
73
53726
Madison, WI
$309,800 higher median home value than ZIP 54423.
Rate
1.67%
Tax
$10,001
Quality
82
Data from U.S. Census Bureau, American Community Survey 2019-2023 5-Year Estimates (ZCTA level). ZIP Code Tabulation Areas (ZCTAs) are Census approximations of USPS ZIP codes.
Estimates are informational only and should not be used as financial or legal advice.