Castle Rock, CO Car Wash Market Analysis
Part of the Denver-Aurora-Centennial, CO MSA.
Data updated · June 9, 2026
2,079 Google reviews across 11 car washes in Castle Rock. Format mix, operator rank, county breakdown, rating vs. income, aspect-level customer signals.
Snapshot
- Locations
- 11
- Chains
- 3
- lead: Cobblestone Car Wash (1)
- Avg rating
- 4.49★
- +0.08 vs MSA median
- Damage rate
- 2.3%
- 1.5× MSA norm
- Top format
- detail shop
- 55% of classified
Market Quality snapshot
- Population
- 76,614
- ACS 2023 5-year
- Households
- 26,917
- ACS 2023 5-year
- Residents per wash
- 6,965
- 3.6× the national MSA median — lighter supply
- Express tunnels per 10K households
- 1.1
- above ~1.0 — contested · classified sites
Key findings
- 11 car wash locations operated by 3 chains and 8 independents.
- Weighted Google rating 4.49★ across the market; structural concentration and format mix sit near US-market norms.
- Built from 2,079 Google reviews, 906 of them AI-extracted across 55 dimensions.
11 car wash locations in Castle Rock, CO · dots colored by format · sized by review volume
No single structural signal jumps out for Castle Rock — it's a mid-shape car wash market. 11 locations across 3 chains and 8 independents. Customer-experience signals across 906 AI-extracted reviews produce the distinct read on this market.
Weighted rating 4.49★; damage 2.3%; membership-cancel friction 10.0%. Equipment reliability runs as the sharpest friction (-0.19). Per-operator and per-format cuts below are more informative than the aggregates.
See the best-rated car washes in Castle Rock, CO
Ranked by Google review rating
Car wash financing in Castle Rock, CO
Since 2010, the U.S. Small Business Administration has backed 5 car-wash loans in Castle Rock, CO worth $12.2M, at a median of $1,825,000 per car wash. About 25% funded brand-new or startup car washes.
- New build / open20% · $1.8M
- Acquisition20% · $1.7M
- Expansion / improvement60% · $2.9M
Source: U.S. Small Business Administration 7(a) & 504 FOIA datasets (NAICS 811192), data through 2026-03-31. See the Car Wash Lending Tracker for national figures and methodology.
About Castle Rock, CO
How many car washes are in Castle Rock, CO?
+
What is the best-rated car wash in Castle Rock, CO?
+
Which car wash chains operate in Castle Rock, CO?
+
What is the median household income near Castle Rock car washes?
+
What is the average car wash rating in Castle Rock, CO?
+
What kinds of car washes does Castle Rock have?
The format mix in Castle Rock reads as a typical mid-market US city — express tunnels and detail shops carrying the bulk of supply, with full-service and self-serve layered in. The bar chart pairs location count with per-format average rating.
Highest-rated format in this market: Detail Shop at 4.94★ (6 locations). Lowest: Full Service at 3.80★ (1 locations).
| Format | Locations | % of MSA | Reviews | Avg Rating | Damage Rate | Cancel Friction |
|---|---|---|---|---|---|---|
| Detail Shop | 6 | 54.5% | 696 | 4.94 | 0.59% | 0.0% |
| Express Tunnel | 3 | 27.3% | 849 | 4.57 | 4.07% | 8.7% |
| Full Service | 1 | 9.1% | 522 | 3.80 | 9.76% | 25.0% |
| In-Bay Automatic | 1 | 9.1% | 12 | 2.30 | 0.00% | — |
What is the typical household income near Castle Rock car washes?
Each ZIP in Castle Rock is joined to IRS Statistics-of-Income (tax year 2022) and to the per-location Google rating dataset. The scatter below sizes dots by review volume and colors them by format.
Pearson r between ZIP income and rating across 11 qualifying locations: -0.39 — mild negative. Higher-income ZIPs host slightly lower-rated washes on average, which is unusual. Scatter mean: $150K AGI/return, 4.48★.
Car wash count and quality by income tier
Blue bars: location count per tier. Orange tick marks: average Google rating (same y-axis).
| Income tier (mean AGI/return) | ZIPs | Locations | Reviews | Avg Rating | Top Format |
|---|---|---|---|---|---|
| Under $50K | 0 | 0 | 0 | 0.00 | — |
| $50K – $75K | 0 | 0 | 0 | 0.00 | — |
| $75K – $100K | 0 | 0 | 0 | 0.00 | — |
| $100K – $150K | 2 | 8 | 1,960 | 4.49 | Detail Shop (5) |
| $150K+ | 1 | 3 | 119 | 4.51 | Detail Shop (1) |
Income band spread: 3/4.51★ at the highest tier; 0/0.00★ at the lowest. In a balanced market, the per-tier read is most useful as a sanity check on whether the operating quality is income-uniform or income-stratified.
Who operates the most Castle Rock car washes?
3 chains run sites in Castle Rock; the top 25 are listed below by location count, with their per-chain operating-quality numbers next to them. Useful for narrowing competitive-set considerations or for M&A evaluation.
| # | Chain | Locations | Reviews | Avg Rating | Damage | Cancel | Upsell |
|---|---|---|---|---|---|---|---|
| 1 | Cobblestone Car Wash | 1 | 368 | 4.20 | — | — | — |
| 2 | Conoco | 1 | 12 | 2.30 | — | — | — |
| 3 | Whistle Express Car Wash | 1 | 65 | 4.60 | — | — | — |
What do customers love and complain about at Castle Rock car washes?
Seven aspects, 906 reviews, 11 locations. The grid below gives a quick read on which dimensions of the experience Castle Rock's car wash market does well at and which generate friction.
Where are the 11 car washes in Castle Rock, CO?
11 car washes are tracked in Castle Rock; below is the top of the list by Google review count. Locations with fewer than 10 reviews are excluded from the rating column.
| Location | City | Format | Chain | Rating | Reviews | ZIP AGI |
|---|---|---|---|---|---|---|
| Motospa Car Wash, Detail, & Mobil1 Lube Center 865 Barranca Drive | Castle Rock, CO | Full Service | — | 3.8 | 522 | $120K |
| Liberty Express Wash 1039 Aloha St | Castle Rock, CO | Express Tunnel | — | 4.9 | 416 | $120K |
| Cobblestone Car Wash 1580 Carnaby Ln | Castle Rock, CO | Express Tunnel | Cobblestone Car Wash | 4.2 | 368 | $134K |
| Mountainside Mobile Detailing 414 Wilcox St | Castle Rock, CO | Detail Shop | — | 5.0 | 365 | $120K |
| Elegant Detailing LLC 1050 Topeka Way Unit I | Castle Rock, CO | Detail Shop | — | 4.6 | 84 | $134K |
| Guinness Garage Detailing 2278 Manatt Ct Apartment C01 | Castle Rock, CO | Detail Shop | — | 4.9 | 76 | $120K |
| Argiano Auto Care 1461 Red Hawk Dr | Castle Rock, CO | Detail Shop | — | 5.0 | 73 | $134K |
| Whistle Express Car Wash 5711 New Abbey Ln | Castle Rock, CO | Express Tunnel | Whistle Express Car Wash | 4.6 | 65 | $212K |
| Auto Luxe LLC 282 Malibu St A1 | Castle Rock, CO | Detail Shop | — | 5.0 | 56 | $134K |
| Shiny Mobile Auto Detail - Castle Rock 5049 Factory Shops Blvd | Castle Rock, CO | Detail Shop | — | 5.0 | 42 | $212K |
Compare Castle Rock to other car wash markets in the Denver metro
Cities in the same metro, ordered by closest comparable size. Each link runs the same operator concentration, format mix, and customer-experience analysis.
Data as of 2026-06-09. Pick a format and click Copy.
WashIndex. (2026, June 9). Castle Rock, CO car wash market analysis. https://washindex.com/car-wash-cities/castle-rock-co
WashIndex. "Castle Rock, CO car wash market analysis." WashIndex. Last modified June 9, 2026. https://washindex.com/car-wash-cities/castle-rock-co.
"Castle Rock, CO car wash market analysis." WashIndex, Jun. 9, 2026, https://washindex.com/car-wash-cities/castle-rock-co.
@misc{washindex_car_wash_cities_castle_rock_co_2026,
title = {{Castle Rock, CO car wash market analysis}},
author = {{WashIndex}},
year = {2026},
month = {Jun},
url = {https://washindex.com/car-wash-cities/castle-rock-co},
urldate = {2026-06-09},
} About this analysis
Car wash inventory for Castle Rock, CO is sourced from the WashIndex national car-wash place index, filtered to places whose Google-Maps-reported city matches Castle Rock, and further restricted to places whose format the WashIndex LLM classifier identified as a car wash (excluding dealerships, gas stations, and other auto-related businesses that don't primarily operate a car wash). Inclusion in the parent Denver MSA dataset is established by point-in-polygon against the official US Census county boundaries (TIGER/Line, 2024).
Operating-quality signals are derived from 906 customer reviews processed through WashIndex's 55-field LLM extraction pipeline. Format classification comes from a separate per-location website-reading classifier. ZIP-level income data is from the IRS Statistics of Income (tax year 2022) — mean Adjusted Gross Income per tax return, which is directionally aligned with ACS median household income but available without authentication.
See our full methodology for the extraction pipeline, validation samples, and aggregation logic. Term definitions in the glossary.
Machine-readable: JSON ↓ · API root
Free tools: membership break-even · site opportunity · ROI calculator