76673 ZIP Code, Mount Calm, TX
76673 is a ZIP code in Mount Calm, Texas — mostly in Hill County (61% of its land), with smaller parts in Limestone County. It covers 89 square miles of land. The closest ZIP codes are 76624, 76654 and 76648. 1,196 people live here in 391 households. It is rural, with fewer than 100 people per square mile, and most homes are owner-occupied (83%). Median household income is $63,750, below the Texas median of $78,476.
Quick facts
- Mailing city: Mount Calm, TX
- County: Hill County
- Land area: 89 sq mi
- Population: 1,196
- Median household income: $63,750
- Carrier routes: 2 (534 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 1,196 |
| Households | 391 |
| Median household income | $63,750 |
| Income per person | $28,305 |
| Median age | 39 |
| Homeowners | 82.9% |
| Median home value | $115,300 |
| Median rent | $1,188 |
| Bachelor's degree or higher | 13.1% |
| Average commute (minutes) | 30.7 |
| Households with kids under 18 | 35.3% |
| Moved in the past year | 7.7% |
| Below the poverty line | 7.9% |
| Broadband internet | 93.9% |
| Speak a non-English language at home | 21.1% |
Household income
| % of households | Value |
|---|---|
| <$10K | 4.3% |
| $10–15K | 2.8% |
| $15–25K | 5.6% |
| $25–35K | 4.1% |
| $35–50K | 23.0% |
| $50–75K | 23.5% |
| $75–100K | 14.1% |
| $100–150K | 12.5% |
| $150–200K | 3.3% |
| $200K+ | 6.6% |
Age
| % of all residents | Value |
|---|---|
| <10 | 11.5% |
| 10–19 | 21.7% |
| 20–24 | 3.8% |
| 25–34 | 5.3% |
| 35–44 | 14.4% |
| 45–54 | 9.4% |
| 55–64 | 14.0% |
| 65–74 | 14.5% |
| 75+ | 5.3% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 27.1% |
| Owned outright | 37.5% |
| Rented | 13.4% |
| Vacant | 22.0% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 64.9% |
| Townhome | 0.0% |
| 2–4 units | 0.0% |
| 5–19 units | 0.0% |
| 20+ units | 0.0% |
| Mobile / other | 35.1% |
Businesses in 76673
11 business establishments with 77 employees (ZIP Codes Business Patterns 2023).
- Utilities: 4
EDDM carrier routes
76673 has 2 USPS carrier routes with 534 residential and 9 business mailboxes. Open the EDDM route map.
Carrier routes in 76673
76673 has 2 USPS carrier routes (2 rural (R)) with 534 residential and 9 business mailboxes. Routes range from 156 homes (R402) to 378 homes (R401); the median route has 267 homes. The Census counted 391 households in 76673 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 1 |
| 250–499 | 1 |
| 500–749 | 0 |
| 750–999 | 0 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 76673 for…
Highest income
For bigger-ticket offers: remodeling, pools, financial planning, private schools.
- Route R401 — Est. median household income $69,699, 378 homes
- Route R402 — Est. median household income $60,209, 156 homes
Select these 2 routes on the route map
Often mailed by: Home services EDDM, Real estate EDDM postcards, Landscaping and lawn care mailers
Most families with kids
For tutoring, youth sports, pediatric dental, child care and family dining.
- Route R401 — Est. families with children under 18 35.4%, 378 homes
- Route R402 — Est. families with children under 18 21.7%, 156 homes
Select these 2 routes on the route map
Often mailed by: Dental practice EDDM, Healthcare and clinic mailers
Most homeowners
Owners decide on roofs, HVAC, lawns, solar and insurance; renters usually can't.
- Route R401 — Est. owner-occupied homes 87.4%, 378 homes
- Route R402 — Est. owner-occupied homes 85.1%, 156 homes
Select these 2 routes on the route map
Often mailed by: Roofing direct mail, HVAC postcards
Most new movers
New residents are still choosing a dentist, a gym and a lawn service.
- Route R402 — Est. residents who moved in the past year 13.4%, 156 homes
- Route R401 — Est. residents who moved in the past year 13.3%, 378 homes
Select these 2 routes on the route map
Often mailed by: Restaurant EDDM menus and offers, Gym and fitness mailers
Newest homes
Newer subdivisions: landscaping, window treatments, fencing, security, home warranties.
- Route R401 — Est. homes built 2010 or later 21.5%, 378 homes
- Route R402 — Est. homes built 2010 or later 13.5%, 156 homes
Select these 2 routes on the route map
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route R401 — USPS business mailboxes 7, 378 homes
- Route R402 — USPS business mailboxes 2, 156 homes
Select these 2 routes on the route map
Every carrier route in 76673
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| R401 | Rural | 378 | 7 | $69,699 | 87.4% | 35.4% | 13.3% |
| R402 | Rural | 156 | 2 | $60,209 | 85.1% | 21.7% | 13.4% |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 76673 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
- 76624 — Hallsburg city, TX (7.2 mi)
- 76654 — Leroy city, TX (7.3 mi)
- 76648 — Hubbard city, TX (8.4 mi)
- 76676 — Penelope town, TX (9.5 mi)
- 76678 (10.9 mi)
- 76640 — Ross city, TX (11.3 mi)
- 76691 — West city, TX (12.2 mi)
- 76660 — Malone town, TX (12.8 mi)
Areas that include 76673
- Mount Calm, TX ZIP codes — 1 ZIP code
- Hill County ZIP codes — 18 ZIP codes
- Limestone County ZIP codes — 14 ZIP codes
- Texas ZIP code data
Where it ranks
- No. 5 of 12: highest share of owner-occupied homes in Hill County
- No. 4 of 12: highest share of households with children in Hill County
Mail every home in 76673
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) 76673, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 76673 in?
- 76673 is a Mount Calm, TX mailing address. None of its land lies inside a Census-defined city or community.
- What county is 76673 in?
- 76673 is mostly in Hill County (61% of its land), with smaller parts in Limestone County.
- What is the population of 76673?
- About 1,196 people (±330), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 1,176.
- What is the median household income in 76673?
- $63,750 (±$13,939), compared with $78,476 for Texas as a whole. Half the households in the ZIP code earn more and half earn less.
- How many carrier routes and mailboxes are in 76673?
- 2 USPS carrier routes with 534 residential and 9 business mailboxes (543 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 76673?
- The closest, measured center to center: 76624 (7.2 mi, Hallsburg), 76654 (7.3 mi, Leroy), 76648 (8.4 mi, Hubbard), 76676 (9.5 mi, Penelope), 76678 (10.9 mi) and 76640 (11.3 mi, Ross).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.