Browsing wikipedia, I discovered an entry for the Daily Nous blog run by philosopher Justin Weinberg (South Carolina), to which we occasionally link.   In that entry, there was a link to the Alexa ranking, which in turn took one to Alexa traffic rankings for other philosophy-related sites.  I don't know how accurate these are, but according to Alexa here's how several philosophy blogs/sites rank worldwide:

Crooked Timber              197,362 (group blog, including some philosophers)

Leiter Reports                224,454

APA website                   405,598

Daily Nous                      529,875 (although 90 days ago, it ranked #362,241)

Philosophers' Cocoon       547,311

Digressions, Impressions  939,895

Pea Soup (ethics blog)   1,573,961

By way of comparison, The New York Times website ranks #76, Pornhub ranks #56 (!!!), The New York Review of Books site ranks #46,383, while the London Review of Books site ranks #94,741.

This blog averages over 10,000 unique visits per day, but I don't know how that translates into differences in ranking, assuming they are actually sensitive to differences in traffic.  (The odd fluctuation for the Daily Nous blog leads me to think either that Alexa isn't reliable or that small differences in traffic have huge effects on a site's rank; on the other hand, this blog was ranked only slightly higher, around 216,000, three months ago according to Alexa).