61378 ZIP Code, West Brooklyn, IL
61378 is a ZIP code in West Brooklyn, Illinois in Lee County. It covers 61 square miles of land. The closest ZIP codes are 61318, 61331 and 61353. 513 people live here in 181 households. It is rural, with fewer than 100 people per square mile, and owners and renters are mixed (69% own). Median household income is $85,350, close to the Illinois median of $83,390; the median age is 29.8, younger than most ZIP codes.
Quick facts
- Mailing city: West Brooklyn, IL
- County: Lee County
- Land area: 61 sq mi
- Population: 513
- Median household income: $85,350
- Carrier routes: 1 (167 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 513 |
| Households | 181 |
| Median household income | $85,350 |
| Income per person | $39,412 |
| Median age | 29.8 |
| Homeowners | 68.5% |
| Median home value | $188,600 |
| Median rent | $1,167 |
| Bachelor's degree or higher | 21.9% |
| Average commute (minutes) | 38.6 |
| Households with kids under 18 | 27.1% |
| Moved in the past year | 0.8% |
| Below the poverty line | 3.1% |
| Broadband internet | 94.5% |
| Speak a non-English language at home | 1.6% |
Household income
| % of households | Value |
|---|---|
| <$10K | 0.6% |
| $10–15K | 6.1% |
| $15–25K | 5.0% |
| $25–35K | 7.2% |
| $35–50K | 3.9% |
| $50–75K | 16.0% |
| $75–100K | 28.2% |
| $100–150K | 9.4% |
| $150–200K | 6.1% |
| $200K+ | 17.7% |
Age
| % of all residents | Value |
|---|---|
| <10 | 16.8% |
| 10–19 | 16.8% |
| 20–24 | 3.3% |
| 25–34 | 21.6% |
| 35–44 | 9.0% |
| 45–54 | 3.7% |
| 55–64 | 11.3% |
| 65–74 | 6.2% |
| 75+ | 11.3% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 28.0% |
| Owned outright | 34.0% |
| Rented | 28.5% |
| Vacant | 9.5% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 94.0% |
| Townhome | 0.5% |
| 2–4 units | 0.0% |
| 5–19 units | 0.0% |
| 20+ units | 0.0% |
| Mobile / other | 5.5% |
Businesses in 61378
12 business establishments with 39 employees (ZIP Codes Business Patterns 2023).
- Construction: 4
- Transportation and Warehousing: 3
EDDM carrier routes
61378 has 1 USPS carrier routes with 167 residential and 2 business mailboxes. Open the EDDM route map.
Carrier routes in 61378
61378 has 1 USPS carrier routes (1 rural (R)) with 167 residential and 2 business mailboxes. Routes range from 167 homes (R004) to 167 homes (R004); the median route has 167 homes. The Census counted 181 households in 61378 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 1 |
| 250–499 | 0 |
| 500–749 | 0 |
| 750–999 | 0 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Every carrier route in 61378
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| R004 | Rural | 167 | 2 | $80,379 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 61378 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
- 61318 — Compton village, IL (4.1 mi)
- 61331 — Lee Center CDP, IL (6.5 mi)
- 61353 — Paw Paw village, IL (8.6 mi)
- 61367 — Sublette village, IL (8.8 mi)
- 60553 — Steward village, IL (9.3 mi)
- 61006 — Ashton village, IL (9.9 mi)
- 61310 — Amboy city, IL (10.4 mi)
- 61031 — Franklin Grove village, IL (11.3 mi)
Areas that include 61378
- West Brooklyn, IL ZIP codes — 1 ZIP code
- Lee County ZIP codes — 18 ZIP codes
- Illinois ZIP code data
Mail every home in 61378
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) 61378, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 61378 in?
- 61378 is a West Brooklyn, IL mailing address. None of its land lies inside a Census-defined city or community.
- What county is 61378 in?
- 61378 is in Lee County.
- What is the population of 61378?
- About 513 people (±181), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 518.
- What is the median household income in 61378?
- $85,350 (±$7,604), compared with $83,390 for Illinois as a whole. Half the households in the ZIP code earn more and half earn less.
- How many carrier routes and mailboxes are in 61378?
- 1 USPS carrier routes with 167 residential and 2 business mailboxes (169 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 61378?
- The closest, measured center to center: 61318 (4.1 mi, Compton), 61331 (6.5 mi, Lee Center), 61353 (8.6 mi, Paw Paw), 61367 (8.8 mi, Sublette), 60553 (9.3 mi, Steward) and 61006 (9.9 mi, Ashton).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.