What a Rock Springs home costs each year
Property tax, water, trash and energy from public rates. Look up your address to make it yours, and see how to pay less.
Suggestions as you type come from Google; the lookup uses free public map services to find who serves it. Not stored unless you save your house.
Starts at the typical market value, $256,200; your assessed value is often lower. Typical use.
- Property tax$1,345
0.700% of $256,200, less $64,050 homeowner's exemption: 25% of taxable value
- Electricity and gas$2,296
765 kWh a month $1,348 · 77.6 therms $948
- Water and sewer$1,325
9 units (CCF) a month on City of Rock Springs: water $50, sewer $60 a month
- Trash$324
Residential garbage (weekly), $27 a month
- Home insurance$1,958
Typical premium $1,958
A Rock Springs house at the typical market value ($256,200) costs about $7,200 a year: $1,340 property tax and charges, $1,320 water and sewer, $320 trash, $2,300 electricity and gas, $1,960 home insurance. Estimated from public rates, not anyone's actual bill.
Rates checked Oct 28, 2026. Insurance: what you enter, or a typical premium until you do. Sources are listed at the bottom.
Ways to pay less
Nothing here applies to every house automatically. These are worth checking:
Homeowner's exemption: 25% off taxable value
Owner-occupied homes
How: Removes 25% of the taxable value of an owner-occupied single-family residential dwelling and associated improved land, on the first $1 million of fair market value.
Age 65+ with 25 years of Wyoming residential tax: Long-term Homeowner's Exemption
Long-term homeowners
How: Available to homeowners 65 or older, or whose spouse is 65 or older, who have paid residential property taxes in Wyoming for at least 25 years; the years need not be consecutive.
Veterans exemption
Qualifying veterans
How: Qualifying taxpayers may reduce their property tax liability; the County Assessor's Office determines eligibility.
Money dates
- Nov 10in 5 daysLast day to pay the first installment of current year property taxes without interest.
- Dec 31in 56 daysLast day to pay the entire current year property taxes without interest charged on the first installment.
- May 10Last day to pay the second installment of prior year property taxes without interest.
Who serves this house
- Water
- City of Rock Springs
- Rates effective 7/1/2026, billed in arrears
- Property tax
- 0.70% of value
- 2026 tax year, Sweetwater County (City of Rock Springs, tax district 0151)
- Garbage
- Wyoming Waste Systems
- Residential garbage, weekly pickup
- Sewer
- City of Rock Springs
- Minimum charge plus a per-cubic-foot charge based on the three lowest months of water use
- Electricity
- Rocky Mountain Power
- Schedule 2 residential service
- Gas
- Enbridge Gas Wyoming
- General Service Small (GSS)
Your water
- Source
- Our drinking water originates from the Green River.
- Water quality report
- The water system had no violations and the water meets or exceeds State and Federal Regulations.
Other WY cities
Cheyenne home costsLaramie home costsCasper home costsGillette home costsRiverton home costsCody home costsSheridan home costsEvanston home costs
How these numbers are made
- Property tax: Sweetwater County 2026 mill levy sheet, Rock Springs tax district 0151, 73.670 mills in total (school district 44.700, college 5.500, county 12.000, city 8.000, Solid Waste District #1 2.910, weed and pest 0.560). Each mill rate is multiplied by Wyoming's 9.5% residential assessment ratio and applied to market value.
- The calculator subtracts the 25% homeowner exemption from market value first. The starting value is the Census median market value, not an assessor figure.
- Water: the 7/1/2026 residential schedule; the $21.46 minimum covers the first 268 cubic feet (2.68 CCF), then $0.05145 per cf to 670 cf and $0.03617 per cf above. Sewer: $17.85 minimum (268 cf) then $0.06661 per cf, billed on the average of the 3 lowest months of water use; the page applies sewer to the month's full water use, so at typical use sewer is probably overstated compared with the winter-low billing average.
- Garbage: the city ordinance caps the residential fee at $27 a month for 2026 (schedule rising $1 a year to $31 in 2030); the fee is used as the rate. Electricity: Schedule 2 combined price (base, riders) $24.24 a month and 11.515 cents per kWh. Gas: Enbridge GSS $12.00 a month plus $8.63324 per Dth (0.863324 per therm).
- Typical electricity (9,180 kWh a year) and gas (898 ccf, about 77.6 therms a month) use is the EIA 2020 Wyoming household average. The city publishes no typical water use, so the page uses its generic 9 ccf a month assumption for water; EIA is not a water source.
- Insurance: 2023 Wyoming statewide average premium; no newer Wyoming Insurance Department or NAIC figure was found (NAIC's latest is 2022), and it is not specific to Rock Springs.
- Nothing here is legal, tax or insurance advice.
- Rock Springs water and sewer rates (7/1/2026)
- Sweetwater County 2026 mill levy sheet
- Sweetwater County property tax
- Wyoming owner-occupied exemptions
- Sweetwater County taxation calendar
- Rocky Mountain Power Wyoming price summary
- Rocky Mountain Power Rock Springs
- Enbridge Gas Wyoming tariff
- Rock Springs water quality report
- Rock Springs garbage ordinance 2024-14
- Wyoming Waste Systems Rock Springs
- Census median home value
- EIA state consumption
- Wyoming homeowners insurance
- Sweetwater County tax relief
How Rock Springs compares
A typical Rock Springs house against the 9 Wyoming cities we cover, using the same default numbers as the total above.
| Per year | Rock Springs | Median | Where it falls |
|---|---|---|---|
| Property tax rate | 0.70% | 0.69% | higher than 6 of the other 8 Wyoming cities we cover |
| Water | $606 | $565 | higher than 6 of the other 8 Wyoming cities we cover |
| Sewer and utility-bill fees | $719 | $600 | higher than 7 of the other 8 Wyoming cities we cover |
| Trash | $324 | $317 | higher than 5 of the other 8 Wyoming cities we cover |
| Electricity and gas | $2,296 | $2,251 | higher than 5 of the other 8 Wyoming cities we cover |
| Home insurance | $1,958 | $1,958 | higher than 1 of the other 8 Wyoming cities we cover |
| Total | $7,248 | $7,128 | higher than 6 of the other 8 Wyoming cities we cover |
Cities bill differently (some put trash on the tax bill, some cover more services), so a higher number isn't necessarily worse. The property tax rate is compared instead of dollars because house values differ.
Questions to ask your candidates
Each one starts from a number above. Any candidate can answer them.
1. Property tax rate
The fact: Rock Springs's property tax rate is 0.70%, higher than 6 of the other 8 Wyoming cities we cover. The rate adds up every agency on the bill, not only the city.
Ask: "Property tax in Rock Springs is 0.70%, higher than 6 of the other 8 Wyoming cities we cover. What should that money pay for first, and would you change anything about how it is set?"
2. Water
The fact: Water here costs about $606 a year at typical use, higher than 6 of the other 8 Wyoming cities we cover.
Ask: "Water here costs about $606 a year at typical use, higher than 6 of the other 8 Wyoming cities we cover. What drives that cost, and would you change anything?"
3. Sewer and utility-bill fees
The fact: Sewer and flat utility-bill charges here come to about $719 a year, higher than 7 of the other 8 Wyoming cities we cover. Some cities bill sewer on the property tax bill instead, which is not counted here.
Ask: "Sewer and flat utility-bill charges here cost about $719 a year, higher than 7 of the other 8 Wyoming cities we cover. What drives that cost, and would you change anything?"
Common questions about Rock Springs house costs
What is the property tax rate in Rock Springs?
About 0.70% of the value before exemptions a year (2026 tax year, Sweetwater County (City of Rock Springs, tax district 0151)), plus flat charges on the same bill.
How much is property tax on a $500,000 house in Rock Springs?
About $2,624 a year on $500,000 of the value before exemptions with the homeowner's exemption: 25% of taxable value.
How much is the water bill in Rock Springs?
About $110 a month for water and sewer at typical use (9 units, or 6,732 gallons a month) on City of Rock Springs.
How much does trash pickup cost in Rock Springs?
$27 a month for a house.
Can seniors lower their property tax or bills in Rock Springs?
Yes. Age 65+ with 25 years of Wyoming residential tax: Long-term Homeowner's Exemption: Long-term homeowners
How much does a house in Rock Springs cost to run each year?
A Rock Springs house at the typical market value ($256,200) costs about $7,200 a year: $1,340 property tax and charges, $1,320 water and sewer, $320 trash, $2,300 electricity and gas, $1,960 home insurance. Estimated from public rates, not anyone's actual bill.