ZIP Code 00978 in Saint Just, PR

Data Last Updated: February 1, 2026
City:Saint Just, Puerto Rico
County:Trujillo Alto County
Timezone:Atlantic (GMT -04:00)
Local Time:9:11:32 PM
Population:No Population Data
Area Codes:787 / 939
Classification:PO Box
Coordinates:18.3703, -66.0123
Quick Link:
https://www.zip-codes.com/zip-code/00978/zip-code-00978.asp

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00978 - Saint Just, PR

ZIP Code 00978, Saint Just

Small Town Unique ZIP No Census Data
LocationTrujillo Alto County, PR
Area0 sq mi Single Point
Delivery Points720 (1 homes, 110 businesses)
PO Boxes609
ZIP CreatedBefore Oct 2004
Enclosed InZIP Code 00987
Key Facts
  • This is a PO Box-only ZIP code with no street delivery routes
  • The post office maintains 609 PO Boxes for residential and business customers
  • 110 businesses use this ZIP code for their mailing address
  • All mail delivery requires PO Box rental and post office pickup
  • The service area is geographically located within neighboring ZIP 00987

Postal Operations

This service area operates within ZIP 00987's geographic boundaries. Customers must pick up their mail at the post office. The facility handles both residential and business mail through its box system.

Street Name Patterns

No street delivery infrastructure exists in this ZIP code. All mail service operates through the PO Box system at the post office.

Business & Employment Statistics


ZIP Code 00978 is designated for PO Box delivery only; business establishment and employment data are not available.

# Residential Mailboxes:0Source: USPS
# Business Mailboxes:0Source: USPS
Total Delivery Receptacles:619Source: USPS
Single Family Delivery Units:0Source: USPS
Multi Family Delivery Units:0Source: USPS
# of Businesses:0Source: CBP
1st Quarter Payroll:$0Source: CBP
Annual Payroll:$0Source: CBP
# of Employees:0Source: CBP

Geography, Land Area, & Statistical Classifications


ZIP Code 00978 is located in Trujillo Alto County, Puerto Rico, within the San Juan-Bayamon-Caguas, PR Metropolitan Statistical Area (CBSA 41980). This Metro area has a population of 2,063,795 people, about 0.00% of whom live in ZIP Code 00978. It covers 0 sq mi of land and a water area of 0 sq mi.

CBSA Name:San Juan-Bayamon-Caguas, PRSource: Census
CBSA Number:41980Source: Census
CBSA Type:MetroSource: Census
CBSA Division:--Source: Census
CBSA Population:2,063,795Source: Census
MSA:San Juan-Caguas-Arecibo, PR CMSASource: Census
Land Area:--Source: Census
Water Area:--Source: Census
Congressional District:No DistrictsSource: USPS
Congressional Land Area: sq miSource: Census
PMSA:San Juan-Bayamon, PR PMSASource: Census
Intro Date:< 2004-10Source: ZIP-Codes.com
Place FIPS Code:--Source: Census
Place Name:--Source: Census

Adjacent & Nearby ZIP Codes


00979 | | 00977

Schools in ZIP Code 00978


We could not locate which school district 00978 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.

Petra Zenon De Fabery Carr 181 Km 1 Hm 8 Bo Las Cuevas
Trujillo Alto, PR 00976
District: Puerto Rico Department of EducationNearby
Hermina Diaz Aponte (Lago Alto) Calle Torrecilla Urb. Lago Alto #1167
Trujillo Alto, PR 00976
District: Puerto Rico Department of EducationNearby
Jesus Silva Calle Azucena Esq. Gardenia Urb. Villa Blanca
Trujillo Alto, PR 00976
District: Puerto Rico Department of EducationNearby
Tulio Larrinaga Calle Andres Valcarcel
Trujillo Alto, PR 00977
District: Puerto Rico Department of EducationNearby
Medardo Carazo Callle Cruz Final # 50
Trujillo Alto, PR 00977
District: Puerto Rico Department of EducationNearby

Colleges & Post Secondary Schools near ZIP Code 00978


Universidad Teologica Del Caribe Road 848 Km. 0.5 Callejon Marquez, Bo. Saint Just
Trujillo Alto, PR 00978-0901
Type: Post Secondary
Nuc University - Ibc Technical Division - Escorial Ave, 65th Infanteria, Km.5.4 Bo Sabana Lllana
San Juan, PR 00928-0000
Type: Post Secondary
University Of Puerto Rico-Carolina Carretera 887 Bo San Anton
Carolina, PR 00984-4800
Type: Post Secondary
Cem College-San Juan 1206 13th. Street Ext San Agustin
San Juan, PR 00926-1931
Type: Post Secondary
Instituto Tecnologico De Puerto Rico-Recinto De San Juan Calle Alegria Final Urb Las Virtudes
San Juan, PR 00924
Type: Post Secondary
Neo-Esthetique European Institute Avenida Winston Churchill #305
San Juan, PR 00926-0000
Type: Post Secondary

Sources & References


Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on February 1, 2026.

  1. U.S. Postal Service [Last Updated: 2/1/2026], https://www.usps.com
  2. ZIP-Codes.com Proprietary Data Enhancements [Updated: 2/1/2026], https://www.zip-codes.com
  3. U.S. Census [Updated: Varies], https://www.census.gov
    • U.S. Census Office of Management and Budget [Updated: As Released]
    • U.S. Census 2020 Demographic & Housing Characteristics (DHC) [Decennial] [Updated: 5/25/2023]
    • U.S. Census 2011-2024 American Community Survey 5-year estimates (ACS) [Annually] [Updated: Annually, As Released]
    • U.S. Census Business Patterns (CBD) [Annually] [Updated: Annually, As Released]
    • U.S. Census American National Standards Institute (ANSI) [Updated: As Released]
  4. U.S. Geological Survey [Updated: Varies], https://www.usgs.gov
  5. Centers for Medicare & Medicaid Services [Updated: Annually, As Released], https://www.cms.gov
  6. National Center for Education Statistics [Updated: 2/1/2026], https://nces.ed.gov