554 S 4th Ave, Mills (Casper), WY 82604 Property Records

Natrona County property record for 554 S 4th Ave, Mills, WY 82604

Property Summary

Property TypeSingle Family Home
Details2 bd · 2 ba · 1,254 sqft · built 1960
Lot Size0.243 acres (10,600 sqft)
OwnerCompany Name on Record
Tax Bill$684 (2026)
Flood ZoneZone X (minimal risk)
APN3380-12-22-4-01000

Property Details

APN / Parcel Number

Primary APN3380-12-22-4-01000
Alternative APNs
  • 03721000000400
  • R0031812

Interior

Bedrooms2 Beds
Full Baths2 Baths
Total Rooms4 Rooms
Stories1 Story
Building Area1,254 sqft Living Area
Interior WallsWallboard/Drywall
Fireplaces1 Fireplace
FireplaceFireplace

Exterior

Year BuiltBuilt 1960
Effective Year BuiltEffective 1960
Architectural StyleRanch
Exterior MaterialWood
Construction TypeFrame
Roof TypeFlat
Roof MaterialMetal
Lot Area10,600 sqft (0.243 acres)
Garage TypeDetached
Garage Area480 sqft
Parking Spaces2 Parking Spaces
PorchSlab
Storage Building128 sqft

Utilities, Heating & Cooling

Heating SystemForced Air with A/C

Location & Zoning

Account NumberR0031812
Street Address554 S 4TH AVE
CityMILLS
StateWY
Zip82604-2558
Property CategoryResidential
Property TypeResidential > Single Family > Home
Legal DescriptionEVERGREEN PK LOT 4
Legal Range80W
Legal Township33N
Legal Section12
Legal SubdivisionEVERGREEN PK
Legal Lot Number4
JurisdictionNATRONA WY
Township / Civil DivisionCASPER
Census Block Group2
Census Block2007
Census Tract1100

Owner

Source: Natrona County records, as of September 29, 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of RecordCompany Name on Record
Mailing Address554 S 4TH AVE, MILLS, WY 82604-2558
OccupancyOwner Occupied
Owner TypeCompany
VestingTrust, Living Trust

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed NamesName on Deed
Last Transfer DateMay 14, 2015
Transfer Doc0000991932
Record UpdatedOct 29, 2026

Tax Assessment & Valuation

Source: Natrona County assessment roll, as of July 7, 2026

Property Jurisdictions

TypeName
StateWyoming
CountyNatrona County
MunicipalityMills Town
Unified School DistrictNatrona County School District 1 (KG - 12)

Tax Bill & Assessment History

YearTax BillAssessed ValueAssessed Market Value
2026$684.00$9,389 (+2.97%) Land $2,059 Building $7,330$208,747 (+6.91%) Land $50,035 Building $158,712
2025$684.00 (-41.29%)$9,118 (-42.95%) Land $1,980 Building $7,138$195,250 (+16.05%) Land $41,686 Building $153,564
2023$15,983 Land $4,058 Building $11,925$168,252 Land $42,718 Building $125,534
2022$1,165.00

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

Source: FEMA National Flood Hazard Layer, effective January 2, 2020 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it
Community Rating SystemClass 10 (0% premium discount)
Nearby Flood Policies5 in force
Nearby Flood Claims2 (1994–2011)
Claims Outside the SFHA1 of 2
Most Recent ClaimJun 2011 · Severe Storms, Flooding, And Landslides

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire RiskLow
lower than 80% of the US · lower than 94% of Wyoming
Wildfire Likelihood0.01% annual chance
ExposureIndirect
within ember reach

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water SystemCITY OF MILLS
serves 4,050 people · EPA ID WY5600036
Water SourceGroundwater influenced by surface water
Last State InspectionAug 2022
LeadUnder 1 ppb (2023–2025)
action level 15 ppb

Violations Reported to EPA

Water QualityTotal trihalomethanes
resolved · Jan 2025
Treatment and ProcedureNone
last 10 years
Monitoring and ReportingNone
last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.

Internet Providers

Source: FCC Broadband Data Collection, based on 195 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
Spectrum
Cable
1,000 / 1,000
Mountain West Technologies
Fixed Wireless · Fiber in parts of the area
300 / 50
Visionary Broadband
Fixed Wireless
100 / 20
AT&T
Fixed Wireless
100 / 20

May also be available: Verizon.

Nearby Properties on S 4th Ave

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