Moving from Simi Valley, CA to Thornton, CO
A move from Simi Valley, CA to Thornton, CO covers 1045 mi and around 18h 38m of driving through 5 state(s). At this range plan for a two- or three-day drive, a hauler or PODS container for household goods, and a noticeable shift in weather, tax jurisdiction, and housing market. The sections below pull the current BEA, Census, Zillow, BLS, and NOAA figures into one view.
1045 mi · 18h 38m by car · CO → UT → AZ → NV → CA
Distance & route
| Route through | CO → UT → AZ → NV → CA |
|---|---|
| Primary highways | I 70, I 15, I 15 ALT |
| Major cities en route | Westminster, Boulder, Denver, Aurora, Centennial |
Route via OSRM driving profile. Actual time varies with traffic and season.
Cost of living
| Simi Valley | Thornton | U.S. avg | |
|---|---|---|---|
| All items (RPP) | 110.534 | 105.782 | 100.0 |
| Rents | 152.925 | 87.856 | 100.0 |
| Goods | 105.168 | 100.957 | 100.0 |
| Services | 171.096 | 146.919 | 100.0 |
Thornton and Simi Valley are close on the overall BEA RPP (110.534 vs 105.782); rent and services often drive the real difference.
Source: BEA Regional Price Parities (MSA-level · MSA-level); 2024.
Housing prices
Housing gap is large: Thornton typical home at $502,945 is 4.3% under Simi Valley at $844,909 (Zillow, 2026-03).
YoY change: Simi Valley -2.5%, Thornton -3.3%. Snapshot: 2026-03. Data provided by Zillow.
Climate
| 1991–2020 normals | Simi Valley | Thornton |
|---|---|---|
| Annual avg temperature | 66°F | 52°F |
| January avg low | 43°F | 19°F |
| July avg high | 95°F | 91°F |
| Annual snowfall | 0.0" | 44.8" |
| Annual precipitation | 16.4" | 14.5" |
Thornton is 13.9°F cooler on the annual average (66.3°F vs 52.4°F, NOAA 1991–2020).
Significant snow at the destination: Thornton sees 44.8 in a year on NOAA normals — budget for winter gear and plowing.
Source: NOAA U.S. Climate Normals 1991–2020 (stations: WOODLAND HILLS PIERCE COLLEGE, CA US, NORTHGLENN, CO US).
Demographics
| ACS 5-year 2023 | Simi Valley | Thornton |
|---|---|---|
| Population | 125,769 | 142,878 |
| Median household income | $117,703 | $100,985 |
| Median age | 41.8 | 34.3 |
| Bachelor's degree or higher | 24.9% | 22.3% |
| Avg household size | 2.84 | 2.88 |
Median household income in Thornton is 4.3% below Simi Valley ($117,703 → $100,985, ACS 2023).
Source: U.S. Census Bureau, ACS 5-year 2023.
Jobs & wages
Top occupations in Thornton MSA
| Occupation | Employment | Median wage |
|---|---|---|
| Office and Administrative Support Occupations | 173,910 | $49,000 |
| Sales and Related Occupations | 172,890 | $48,280 |
| Business and Financial Operations Occupations | 164,250 | $84,370 |
| Food Preparation and Serving Related Occupations | 140,150 | $36,010 |
| Transportation and Material Moving Occupations | 129,510 | $45,350 |
Source: BLS Occupational Employment and Wage Statistics.
Moving between California and Colorado
State income-tax top marginal rates are from the Tax Foundation, updated annually. Check Colorado's DMV for the current deadline to transfer driver license and vehicle registration after establishing residency. Consult a tax professional for your specific filing situation — state tax treatment depends on residency, sourcing, and reciprocity agreements.
Best time to move
Moving companies typically charge 20–30% more between Memorial Day and Labor Day (peak season). October through April offers the lowest rates and better mover availability.
To avoid mid-semester school transfers, most U.S. families schedule moves between mid-June and mid-August. Public school calendars typically run late August or early September through late May or early June.
Winter driving along this route
- Mountain passes on I-70 west of Denver and on I-25 near Raton can close for snow November through April — check CDOT alerts before departure.
- I-80 through Parleys Canyon and I-70 through the San Rafael Swell see winter closures; I-15 north of Salt Lake can slow in storms.
- I-17 and I-40 through the Flagstaff area can see winter closures; the rest of Arizona is generally clear year-round.
- I-80 east of Reno and US-50 across the Sierra can require chains in winter storms.
- Donner Pass (I-80) and Tejon Pass (I-5 Grapevine) see chain requirements and occasional closures December through March.
State DOT 511 phone or web services provide real-time road conditions year-round.
Packing & arrival checklist
- You are moving to a much snowier climate — Thornton averages 44.8 in annually vs 0.0 in at origin. Don't bury the winter gear in a hard-to-reach box.
- Air conditioning matters: July highs in Thornton average 91°F on NOAA normals. If the new place has window-unit or no AC, plan that purchase for the first week.
- Dry climate: Thornton sees only 14.5 in of precipitation a year. A humidifier helps keep wood furniture from cracking and is easier on skin and sinuses.
- You are moving to a noticeably colder climate (13.9°F lower annual average). Thermal layers, insulated boots, and a heavier winter coat should ride in the car, not the truck.
- Arrange utility connection (power, internet, gas, water) two weeks ahead of move-in.
- Update mailing address with USPS change-of-address within the first week post-move.
- Register to vote in Colorado after establishing residency.
Frequently asked
How far is Thornton, CO from Simi Valley, CA?
The driving distance is 1045 mi and the route typically takes 18h 38m via I 70 and I 15. The trip crosses 5 state(s). Actual time varies with traffic and season.
How does household income compare in Simi Valley vs Thornton?
Median household income on the Census ACS 5-year (2023) is $100,985 in Thornton vs $117,703 in Simi Valley — a 14.2% lower figure. Compare this against the cost-of-living gap above when budgeting.
What is the climate difference between Simi Valley and Thornton?
On NOAA 1991–2020 normals, annual average temperature is 52.4°F in Thornton vs 66.3°F in Simi Valley (13.9°F colder). Annual snowfall: 44.8 in vs 0.0 in. Annual precipitation: 14.5 in vs 16.4 in.
Is Thornton more expensive than Simi Valley?
Based on BEA Regional Price Parities (2024), overall price level in Thornton is 4.3% lower than Simi Valley (105.782 vs 110.534, U.S. average = 100). Rent and services typically carry most of this gap.
How much do homes cost in Thornton compared to Simi Valley?
Zillow ZHVI (2026-03) puts the typical home value at $502,945 in Thornton vs $844,909 in Simi Valley — a 40.5% lower figure. Data provided by Zillow Research.
How does the job market in Thornton compare to Simi Valley?
BLS Occupational Employment and Wage Statistics show median wages of $58,490 in the Thornton MSA vs $48,380 in the Simi Valley MSA, on total employment of 1,590,330 and 315,720 respectively. Top occupations on the destination side appear in the Jobs & wages section above.
When is the best time to move from Simi Valley to Thornton?
Moving companies usually charge 20–30% less between October and April (off-peak). Memorial Day through Labor Day is peak pricing. For a 1045 mi drive, weather on the route matters too — see the timing section above for state-specific winter warnings.
Plan the move
Estimate costs with our moving cost calculator, or see where else to move from Simi Valley.
City profiles: Simi Valley, CA · Thornton, CO.