63648 ZIP Code, Irondale, MO
63648 is a ZIP code in Irondale, Missouri — mostly in Washington County (93% of its land), with smaller parts in St. Francois County. It covers 31 square miles of land. The closest ZIP codes are 63624, 63631 and 63653. 1,858 people live here in 734 households. It is rural, with fewer than 100 people per square mile, and most homes are owner-occupied (82%). Median household income is $51,765, below the Missouri median of $70,702.
Quick facts
- Mailing city: Irondale, MO
- County: Washington County
- Land area: 31 sq mi
- Population: 1,858
- Median household income: $51,765
- Carrier routes: 1 (465 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 1,858 |
| Households | 734 |
| Median household income | $51,765 |
| Income per person | $22,630 |
| Median age | 40.9 |
| Homeowners | 82.4% |
| Median home value | $99,500 |
| Median rent | not published |
| Bachelor's degree or higher | 14.5% |
| Average commute (minutes) | 37.4 |
| Households with kids under 18 | 38.0% |
| Moved in the past year | 4.3% |
| Below the poverty line | 22.3% |
| Broadband internet | 92.2% |
| Speak a non-English language at home | 0.0% |
Household income
| % of households | Value |
|---|---|
| <$10K | 8.9% |
| $10–15K | 2.2% |
| $15–25K | 7.9% |
| $25–35K | 7.4% |
| $35–50K | 22.1% |
| $50–75K | 24.4% |
| $75–100K | 8.2% |
| $100–150K | 14.6% |
| $150–200K | 3.7% |
| $200K+ | 0.8% |
Age
| % of all residents | Value |
|---|---|
| <10 | 8.5% |
| 10–19 | 22.3% |
| 20–24 | 2.6% |
| 25–34 | 7.0% |
| 35–44 | 13.2% |
| 45–54 | 19.2% |
| 55–64 | 9.3% |
| 65–74 | 12.2% |
| 75+ | 5.8% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 34.8% |
| Owned outright | 42.9% |
| Rented | 16.6% |
| Vacant | 5.8% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 61.4% |
| Townhome | 0.0% |
| 2–4 units | 0.0% |
| 5–19 units | 0.0% |
| 20+ units | 0.0% |
| Mobile / other | 38.6% |
Businesses in 63648
8 business establishments with 15 employees (ZIP Codes Business Patterns 2023).
EDDM carrier routes
63648 has 1 USPS carrier routes with 465 residential and 1 business mailboxes. Open the EDDM route map.
Carrier routes in 63648
63648 has 1 USPS carrier routes (1 rural (R)) with 465 residential and 1 business mailboxes. Routes range from 465 homes (R081) to 465 homes (R081); the median route has 465 homes. The Census counted 734 households in 63648 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 1 |
| 500–749 | 0 |
| 750–999 | 0 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Every carrier route in 63648
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| R081 | Rural | 465 | 1 | $76,981 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 63648 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
- 63624 — Iron Mountain Lake city, MO (5.5 mi)
- 63631 — Caledonia village, MO (6.3 mi)
- 63653 — Leadwood city, MO (6.9 mi)
- 63660 — Potosi city, MO (6.9 mi)
- 63601 — Park Hills city, MO (8.6 mi)
- 63622 (11.4 mi)
- 63628 — Terre du Lac CDP, MO (12.3 mi)
- 63637 — Doe Run CDP, MO (12.3 mi)
Areas that include 63648
- Irondale, MO ZIP codes — 1 ZIP code
- Washington County ZIP codes — 14 ZIP codes
- Missouri ZIP code data
Where it ranks
- No. 5 of 9: highest median household income in Washington County
- No. 3 of 9: highest share of owner-occupied homes in Washington County
- No. 2 of 9: highest share of households with children in Washington County
- No. 3 of 9: lowest median age in Washington County
- No. 1 of 9: fastest population growth in Washington County
Mail every home in 63648
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) 63648, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 63648 in?
- 63648 is a Irondale, MO mailing address. By land area, 2% lies inside Irondale; the rest is outside any Census-defined city or community.
- What county is 63648 in?
- 63648 is mostly in Washington County (93% of its land), with smaller parts in St. Francois County.
- What is the population of 63648?
- About 1,858 people (±436), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 1,348.
- What is the median household income in 63648?
- $51,765 (±$16,724), compared with $70,702 for Missouri as a whole. Half the households in the ZIP code earn more and half earn less.
- How many carrier routes and mailboxes are in 63648?
- 1 USPS carrier routes with 465 residential and 1 business mailboxes (466 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 63648?
- The closest, measured center to center: 63624 (5.5 mi, Iron Mountain Lake), 63631 (6.3 mi, Caledonia), 63653 (6.9 mi, Leadwood), 63660 (6.9 mi, Potosi), 63601 (8.6 mi, Park Hills) and 63622 (11.4 mi).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.