AGENCY LIST

13Core

Carbondale, Illinois, United States
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Website design, development, hosting, and marketing from WordPress core contributors

Women-owned and based in Carbondale, Illinois, 13Core has run as a web and marketing firm since it was founded on November 1, 2011. The staff includes WordPress core contributors and digital marketing specialists, each with at least 10 years of experience in their field, and the firm has reached 14 years in business, more than 100 clients served, and over 50 custom sites built.

Services cover website design, frontend and backend development, technical SEO, Google Ads management, and paid and organic social media campaigns, paired with managed web hosting and WordPress-specific hosting. Beyond initial builds, 13Core has cleaned more than 400 hacked websites and monitors client sites for uptime through evenings, weekends, and holidays.

Day-to-day operations follow set rules meant to protect client sites and response times. Office hours run 7:30am to 4:30pm Central, Monday through Friday, with a four-hour maximum turnaround for first responses to client emails, and no site changes go live on Fridays besides content updates. One project, built for a regional food guide, was recognized as the Southern Illinois Eats Best Website.

15
YEARS IN BUSINESS
2
SERVICES

Capabilities

Category

Digital Marketing

Services

What these services involve

Social Media Management (SMM)
Ongoing social content planning, publishing, and community management.
Website Optimization
Improvements to speed, UX, SEO foundations, and site performance.

Local service markets

Agency details

Team size
11-50 people
Founded
2011 (15 years)

How 13Core scores 53 on Agency List

The Agency List Score rates each listing out of 100 across four equally weighted areas. It measures the strength of the agency's listing and public signals — not the quality of its work.

Presence & Maturity

25 / 25

How complete and how recently maintained this listing is.

  • Has a detailed written overview.
  • Has a tagline summarising what the agency does.
  • 7 of the core profile fields are filled in.
  • Profile details were updated recently.
  • Founding year on record (2011).

Relevance & Capability

15 / 25

How clearly the agency's specialism and services are classified.

  • Assigned to a primary category.
  • 2 services are listed.

Credibility & Trust

13 / 25

Contactability and verification signals that show a real business.

  • Listing ownership is not yet verified.
  • A working website is on record.
  • A contact address on the agency's own domain is on record.
  • A phone number is on record.
  • Location is on record.

Authority & Proof

0 / 25

Independent proof of work: reviews, published projects and awards.

  • No published reviews yet.
  • No published project work yet.
  • No awards recorded.

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About this agency on Agency List

13Core is listed on Agency List as part of our global directory of professional agencies. Profiles are compiled using a combination of agency-submitted information, publicly available data, and Agency List classification systems.

This page reflects the most current information available for 13Core and may evolve as additional data is verified or updated.

Local context

13Core operates in Carbondale, Illinois, United States serving clients locally and beyond. Agency List organizes firms by geography to help buyers understand the distribution of agencies across regions and markets.

Service markets

Browse service-specific market pages for 13Core across the geography this profile serves.

Country

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Data notes

Profile information is derived from agency submissions and public sources. Some attributes may be estimated and are updated over time as additional data becomes available.