96Hub score
One of the largest full-service US agencies, WebFX pairs a very deep in-house bench with published, itemised pricing tiers — unusual transparency at this scale.
International SEOTechnical SEOLocal SEOContent Marketing
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SEO companies in Pennsylvania
4 companies are headquartered in Pennsylvania and scored on this page, ranked by Hub Score. Entry retainers run $2.5k/mo to $10k/mo, with a median of $3k/mo.
Demand concentrates in Philadelphia, Pittsburgh, Harrisburg. The most common in-house disciplines here are Technical SEO, Analytics, Content Marketing, and the verticals with the deepest local bench are Healthcare, Home Services, Manufacturing & B2B.
Companies listed
4
In Pennsylvania
Median retainer floor
$3k/mo
$2.5k/mo – $10k/mo range
Median tenure
21 yrs
Oldest founded 1996
Hub Score range
62–96
Median 88 of 100
Ranked SEO companies in Pennsylvania
Ordered by Hub Score. Every figure below comes from the company's own published information; nothing is sponsored.
94Hub score
A data-heavy consultancy with a strong analytics engineering culture — big-query pipelines, custom dashboards and a public knowledge-sharing habit.
International SEOTechnical SEOEnterprise SEOAnalytics
82Hub score
A Philadelphia-area agency built around local lead generation for trades, contractors and professional services.
Local SEOTechnical SEOPaid MediaWeb Development
62Hub score
A small, senior team focused on medical and legal practices, with content written by people who understand the vertical.
Local SEOTechnical SEOContent MarketingWeb Development
Side-by-side comparison
All 4 Pennsylvania listings on the four facts buyers screen on first: age, headcount, entry price and pricing model.
| Company | City | Founded | Team | Retainer from | Pricing | Hub Score |
|---|---|---|---|---|---|---|
| WebFX | Harrisburg | 1996 | 500+ | $3k/mo | Monthly retainer | 96 |
| Seer Interactive | Philadelphia | 2002 | 150-250 | $10k/mo | Monthly retainer | 94 |
| 1SEO Digital Agency | Bristol | 2009 | 50-150 | $2.5k/mo | Monthly retainer | 82 |
| Sagapixel | Philadelphia | 2016 | 10-20 | $3k/mo | Monthly retainer | 62 |
What retainers actually start at in Pennsylvania
Median entry retainer is $3k/mo, with the range running $2.5k/mo to $10k/mo. These are floors, not averages of what clients spend — scope, competitiveness and content volume move the real number well above them.
$1.5k–$5k/mo3 companies · 75%
$10k–$20k/mo1 company · 25%
Floors shown in USD, as published or disclosed by each company.
Fast shortlist for Pennsylvania
Picked mechanically from the data on this page, so you can start a shortlist without reading every profile.
Longest-running
WebFX · 96Trading since 1996.
Lowest entry retainer
1SEO Digital Agency · 82Starts at $2.5k/mo.
Boutique team
Sagapixel · 6210-20 people — senior time on the account.
Largest bench
WebFX · 96500+ people across disciplines.
Services available in Pennsylvania
Share of listed companies that deliver each discipline in-house. Anything missing here is work you would brief to a second vendor.
- Technical SEO4 · 100%
- Analytics3 · 75%
- Content Marketing3 · 75%
- Local SEO3 · 75%
- Paid Media3 · 75%
- Web Development3 · 75%
- International SEO2 · 50%
- Enterprise SEO1 · 25%
Industries with local depth
Verticals the listed companies document experience in. Deep local bench means you can compare two or three shops that already know your SERP.
- Healthcare4 · 100%
- Home Services3 · 75%
- Manufacturing & B2B3 · 75%
- Legal2 · 50%
- Ecommerce1 · 25%
- Financial Services1 · 25%
- SaaS & Technology1 · 25%
How to read this state shortlist
Pennsylvania listings cluster around 10-20 (1), 50-150 (1), 150-250 (1), 500+ (1) on headcount, and monthly retainer is the dominant commercial model. That combination tells you what a normal engagement looks like here before you take a single sales call.
Match scale to your problem. 1 of the 4 listed shop is under 50 people, where the people who win the pitch usually do the work. 2 operate at 150+, which buys bench depth for multi-market or multi-location programmes but adds account-management layers.
Treat the retainer floor as a scope signal. A $2.5k/mo floor and a $10k/mo floor rarely describe the same deliverable set. Ask each shortlisted company to map its floor to hours, content output and technical work per month, then compare those, not the price.
Verify tenure independently. Median tenure in Pennsylvania is 21 years; the longest-running listing, WebFX, has traded since 1996. Founding dates can be checked against company registers and archived versions of the site.
How the Hub Score on this page is calculated
100 points across five factors, each computed from a fact you can check yourself. Nothing here is bought, voted on or averaged from review sites.
- 25 ptsTenure — round(years trading ÷ 25 × 25), capped at 25. 25+ years = full marks. Surviving multiple algorithm eras and at least one recession is the most reliable public signal that delivery is repeatable rather than lucky.
- 20 ptsService breadth — 3 points per in-house discipline, capped at 20 (7+ services = full marks). Each discipline you have to buy elsewhere adds a hand-off. Breadth is not automatically better, but it is a fact buyers price in.
- 20 ptsVertical depth — 4 points per industry served, plus an 8-point focus bonus when the company serves 2 or fewer. Capped at 20. A clear position scores well at both ends: deep specialists know a vertical's SERP, broad shops carry pattern library across many. Vague middle ground scores lowest.
- 20 ptsPricing transparency — 8 points for a monthly-retainer model (6 for other models) + 7 for a stated retainer floor + 5 for a live public site. Agencies that will not name a number until the third call cost buyers weeks of qualification time.
- 17 ptsDelivery scale — Team size mapped to a curve: 10-20 → 8, 20-50 → 11, 50-150 → 14, 150-250 → 16, 250-500 → 17, 500+ → 15. The curve peaks in the mid-hundreds: enough bench depth to survive staff churn, small enough that senior people still touch the account. Very large shops lose a point for delivery distance.
SEO companies in Pennsylvania: common questions
- How many SEO companies are listed in Pennsylvania?
- Every company on this page is headquartered in Pennsylvania and scored with the same published Hub Score model. We only list agencies whose operating base we can verify, so the count grows as research is completed rather than being padded with national firms claiming a local address.
- What should an SEO retainer cost in Pennsylvania?
- The retainer floors shown here are what each company states publicly, in USD. Floors are the starting point for a defined scope; competitive verticals, multi-location work and content production typically land above them. Compare like-for-like scope, not headline numbers.
- Is a local SEO company better than a remote one?
- Locality matters when the work depends on local knowledge — map pack visibility, regional press and language nuance. For national or international programmes, discipline depth matters more than distance. We tie every listing to its real base so you can decide deliberately instead of guessing.
- Can a company pay to rank higher on this page?
- No. Ordering is the Hub Score, computed from tenure, in-house service breadth, vertical depth, pricing transparency and delivery scale. There is no paid placement, no sponsored row and no commission on introductions.