80540 ZIP Code, Lyons, CO
80540 is a ZIP code in Lyons, Colorado — mostly in Boulder County (65% of its land), with smaller parts in Larimer County. It covers 153 square miles of land. The closest ZIP codes are 80455, 80503 and 80510. 4,642 people live here in 2,025 households. It is rural, with fewer than 100 people per square mile, and most homes are owner-occupied (89%). Median household income is $139,521, above the Colorado median of $95,470; the median age is 48.1, older than most ZIP codes.
Quick facts
- Mailing city: Lyons, CO
- County: Boulder County
- Land area: 153 sq mi
- Population: 4,642
- Median household income: $139,521
- Carrier routes: 4 (1,402 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 4,642 |
| Households | 2,025 |
| Median household income | $139,521 |
| Income per person | $69,719 |
| Median age | 48.1 |
| Homeowners | 89.0% |
| Median home value | $795,500 |
| Median rent | $2,112 |
| Bachelor's degree or higher | 60.5% |
| Average commute (minutes) | 33 |
| Households with kids under 18 | 27.0% |
| Moved in the past year | 6.2% |
| Below the poverty line | 8.1% |
| Broadband internet | 94.9% |
| Speak a non-English language at home | 9.1% |
Household income
| % of households | Value |
|---|---|
| <$10K | 0.7% |
| $10–15K | 4.1% |
| $15–25K | 3.1% |
| $25–35K | 4.5% |
| $35–50K | 5.4% |
| $50–75K | 4.7% |
| $75–100K | 13.6% |
| $100–150K | 18.4% |
| $150–200K | 8.5% |
| $200K+ | 37.0% |
Age
| % of all residents | Value |
|---|---|
| <10 | 7.7% |
| 10–19 | 14.1% |
| 20–24 | 1.2% |
| 25–34 | 4.8% |
| 35–44 | 14.8% |
| 45–54 | 18.1% |
| 55–64 | 17.9% |
| 65–74 | 15.9% |
| 75+ | 5.8% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 47.9% |
| Owned outright | 20.9% |
| Rented | 8.5% |
| Vacant | 22.7% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 93.7% |
| Townhome | 2.0% |
| 2–4 units | 1.9% |
| 5–19 units | 1.5% |
| 20+ units | 0.0% |
| Mobile / other | 0.8% |
Businesses in 80540
160 business establishments with 849 employees (ZIP Codes Business Patterns 2023).
- Professional, Scientific, and Technical Services: 30
- Construction: 24
- Retail Trade: 18
- Accommodation and Food Services: 18
- Health Care and Social Assistance: 13
- Real Estate and Rental and Leasing: 9
- Manufacturing: 8
- Other Services (except Public Administration): 7
EDDM carrier routes
80540 has 4 USPS carrier routes with 1,402 residential and 14 business mailboxes. Open the EDDM route map.
Carrier routes in 80540
80540 has 4 USPS carrier routes (4 highway contract (H)) with 1,402 residential and 14 business mailboxes. Routes range from 242 homes (H067) to 488 homes (H074); the median route has 336 homes. The Census counted 2,025 households in 80540 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 1 |
| 250–499 | 3 |
| 500–749 | 0 |
| 750–999 | 0 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 80540 for…
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route H074 — USPS business mailboxes 8, 488 homes
- Route H060 — USPS business mailboxes 4, 340 homes
- Route H068 — USPS business mailboxes 1, 332 homes
- Route H067 — USPS business mailboxes 1, 242 homes
Select these 4 routes on the route map
Every carrier route in 80540
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| H060 | Highway contract | 340 | 4 | $120,058 | — | — | — |
| H067 | Highway contract | 242 | 1 | $155,199 | — | — | — |
| H068 | Highway contract | 332 | 1 | $127,158 | — | — | — |
| H074 | Highway contract | 488 | 8 | $147,600 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 80540 on the EDDM route map.
How route demographics are estimated
Mailbox counts come from USPS; demographics are estimates
The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).
How a route gets its figures: the block-group length-share method
We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.
Margins of error
Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.
Different years
USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.
Why some routes show identical figures
Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.
Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
Nearby ZIP codes
- 80455 — Glendale CDP, CO (9 mi)
- 80503 — Longmont city, CO (10.7 mi)
- 80510 — Allenspark CDP, CO (10.9 mi)
- 80481 — Bark Ranch CDP, CO (12.6 mi)
- 80304 — Boulder city, CO (13.8 mi)
- 80302 — Lazy Acres CDP, CO (14.1 mi)
- 80544 — Niwot CDP, CO (14.7 mi)
- 80537 — Loveland city, CO (15.2 mi)
Areas that include 80540
- Lyons, CO ZIP codes — 1 ZIP code
- Allenspark, CO ZIP codes — 2 ZIP codes
- Boulder County ZIP codes — 21 ZIP codes
- Larimer County ZIP codes — 21 ZIP codes
- Colorado ZIP code data
Where it ranks
- No. 3 of 14: highest median household income in Boulder County
- No. 1 of 15: highest share of owner-occupied homes in Boulder County
- No. 1 of 15: highest median age in Boulder County
Mail every home in 80540
Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.
EDDM guides
ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 80540, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 80540 in?
- 80540 is a Lyons, CO mailing address. By land area, 2% lies inside Allenspark; the rest is outside any Census-defined city or community.
- What county is 80540 in?
- 80540 is mostly in Boulder County (65% of its land), with smaller parts in Larimer County.
- What is the population of 80540?
- About 4,642 people (±715), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 4,710.
- What is the median household income in 80540?
- $139,521 (±$24,037), compared with $95,470 for Colorado as a whole. Half the households in the ZIP code earn more and half earn less.
- How many carrier routes and mailboxes are in 80540?
- 4 USPS carrier routes with 1,402 residential and 14 business mailboxes (1,416 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 80540?
- The closest, measured center to center: 80455 (9 mi, Glendale), 80503 (10.7 mi, Longmont), 80510 (10.9 mi, Allenspark), 80481 (12.6 mi, Bark Ranch), 80304 (13.8 mi, Boulder) and 80302 (14.1 mi, Lazy Acres).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.