6159 Thunder Valley Rd, Mills (Casper), WY 82604 Property Records

Natrona County property record for 6159 Thunder Valley Rd, Mills, WY 82604

Property Summary

Property Type	Single Family Home
Details	3 bd · 3 ba · 1,798 sqft · built 2017
Lot Size	0.286 acres (12,458 sqft)
Owner	Individual Name on File
Last Sale	$359,100 (Feb 2021)
Tax Bill	$3,029 (2026)
Deeds & Mortgages	Feb 2021 Mortgage Aug 2017 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`3380-11-30-4-01800`

Property Details

APN / Parcel Number

Primary APN	`3380-11-30-4-01800`
Alternative APNs	`07825000002400` `R0057903`

Interior

Bedrooms	3 Beds
Full Baths	3 Baths
Total Rooms	4 Rooms
Stories	1 Story
Building Area	1,798 sqft Living Area
Basement Area	1,751 sqft
Unfinished Basement	1,751 sqft
Interior Walls	Wallboard/Drywall
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 2017
Effective Year Built	Effective 2017
Architectural Style	Ranch
Exterior Material	Wood
Construction Type	Frame
Roof Type	Gable
Roof Material	Composition Shingle
Lot Area	12,458 sqft (0.286 acres)
Garage Type	Attached
Garage Area	651 sqft
Parking Spaces	2 Parking Spaces
Porch	Slab

Utilities, Heating & Cooling

Cooling System	HVAC
Heating System	Forced Air

Location & Zoning

Account Number	R0057903
Street Address	6159 THUNDER VALLEY RD
City	MILLS
State	WY
Zip	82604-8911
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	ROBERTSON HILLS (AMENDED RPLT) LOT 24
Legal Subdivision	ROBERTSON HILLS (AMENDED RPLT)
Legal Lot Number	24
Jurisdiction	NATRONA WY
Township / Civil Division	CASPER
Census Block Group	2
Census Block	2014
Census Tract	1100

Owner

6159 Thunder Valley Rd is owned and occupied by an individual who bought it in February 2021.

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

Owner of Record	Individual Name on File
Mailing Address	6159 THUNDER VALLEY RD, MILLS, WY 82604-8911
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Her Husband

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Date	Document
Feb 24, 2021	Intrafamily Transfer, Transfer · Conventional Mortgage RELIANT FCU
Aug 10, 2017	Warranty Deed, Subdivision Related Transfer FIRST INTERSTATE BK

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Feb 24, 2021 · Amount on File
Deed Sale	Feb 24, 2021 · Amount on File
Prior Sale	Aug 10, 2017
Deed Document Number	20211098478
Prior Transfer Date	Aug 12, 2015
Prior Transfer Doc	0000997729
Record Updated	Oct 29, 2026

February 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	NATRONA WY
Recording Date	Feb 24, 2021
Property Address	6159 THUNDER VALLEY RD, MILLS, WY 82604-8911
Document Number	0001098478
Map Reference	DOC 1023728
Instrument Date	Feb 19, 2021
Instrument	1098478
Transaction Type	Transfer
Record Updated	Jul 6, 2021
Title Company	FIRST AMERICAN TITLE

Transaction

Tax	$0.00
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	6159 THUNDER VALLEY RD, MILLS, WY 82604-8911

Mortgage

Document Number	0001098479
Date	Feb 24, 2021
Instrument	1098479

Lender

Name	RELIANT FCU
Type	Credit Union

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Mar 1, 2051

August 2017: Warranty Deed, Subdivision Related Transfer

Document Type	Warranty Deed
Jurisdiction	NATRONA WY
Recording Date	Aug 10, 2017
Property Address	6159 THUNDER VALLEY RD, MILLS, WY 82604-8911
Document Number	0001035085
Instrument Date	Aug 8, 2017
Instrument	1035085
Transaction Type	Subdivision Related Transfer
Record Updated	Feb 8, 2019
Title Company	ROCKY MOUNTAIN TITLE

Transaction

Tax	$0.00
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants with Right of Survivorship
Address	6159 THUNDER VALLEY RD MILLS WY 82604, MILLS, WY 82604

Mortgage

Document Number	1035086
Date	Aug 10, 2017
Instrument	1035086

Lender

Name	FIRST INTERSTATE BK
Type	Bank
Address	CASPER, WY 82602

Agreement

Amount	Amount on Record
Term	360 Months
Due	Aug 9, 2047

Tax Assessment & Valuation

The 2026 property tax bill for 6159 Thunder Valley Rd was $3,029.

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

Property Jurisdictions

Type	Name
State	Wyoming
County	Natrona County
Municipality	Mills Town
Unified School District	Natrona County School District 1 (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026	$3,029.00 (-0.03%)	$41,574 (+38.66%) Land $4,122 Building $37,452	$491,834 (+16.29%) Land $60,494 Building $431,340
2025	$3,030.00	$29,982 Land $2,973 Building $27,009	$422,925 Land $43,852 Building $379,073
2023		$38,450 Land $3,314 Building $35,136	$404,734 Land $34,882 Building $369,852
2022	$2,802.00

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

Flood

FEMA maps place 6159 Thunder Valley Rd in Zone X, an area of minimal flood risk, though there have been 2 flood claims nearby since 1994.

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

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Community Rating System	Class 10 (0% premium discount)
Nearby Flood Policies	5 in force
Nearby Flood Claims	2 (1994–2011)
Claims Outside the SFHA	1 of 2
Most Recent Claim	Jun 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

Wildfire risk around 6159 Thunder Valley Rd is moderate, ranking above 56% of the US, with a 0.1% annual chance of wildfire.

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

Wildfire Risk	Moderate above 56% of the US · lower than 60% of Wyoming
Wildfire Likelihood	0.1% annual chance
Exposure	Indirect within ember reach
Adjoins Burnable Land	Yes

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 System	CITY OF MILLS serves 4,050 people · EPA ID WY5600036
Water Source	Groundwater influenced by surface water
Last State Inspection	Aug 2022
Lead	Under 1 ppb (2023–2025) action level 15 ppb

Violations Reported to EPA

Water Quality	Total trihalomethanes resolved · Jan 2025
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None 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 92 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Spectrum Cable	1,000 / 1,000
Verizon Fixed Wireless	300 / 20
Mountain West Technologies Fixed Wireless · Fiber in parts of the area	125 / 25
Visionary Broadband Fixed Wireless	100 / 20

May also be available: T-Mobile.

Nearby Properties on Thunder Valley Rd

Nearby Streets

Search Property Records by Address or Parcel Number

Search by:

By searching, you agree to: Terms • Privacy • Disclosures