Not sure but YouTube has all the episodes.
Watch the Japanese version with English subs for better episodes! 4kids ruined the English version.
It is currently running on Toonzai/CW4Kids
Sonic X 4KidsTV Stations for First Run:
New York, NY: FOX 5 (WNYW)
Los Angeles, CA: FOX 11 (KTTV)
Chicago, IL: UPN 50 (WPWR)
Philadelphia, PA: FOX 29 (WTXF)
San Francisco, CA: FOX 2 (KTVU)
Boston, MA: FOX 25 (WFXT)
Dallas, TX: IND 27 (KDFI)
Washington, DC: FOX 5 (WTTG)
Atlanta, GA: UPN 69 (WUPA)
Detroit, MI: WB 20 (WDWB)
Houston, TX: FOX 26 (KRIV)
Seattle, WA: FOX 13 (KCPQ)
Minneapolis, MN: UPN 29 (WFTC)
Bemidji, MN: UPN 26 (KFTC)
Tampa, FL: MORE 32 (WMOR)
Miami, FL: UPN 33 (WBFS)
Phoenix, AZ: WB 61 (KASW)
Cleveland, OH: WB 55 (WBNX)
Denver, CO: FOX 31 (KDVR)
Sacramento, CA: FOX 40 (KTXL)
Orlando, FL: FOX 35 (WOFL)
Pittsburgh, PA: FOX 53 (WPGH)
St. Louis, MO: FOX 2 (KTVI)
Portland, OR: UPN 49 (KPDX)
Baltimore, MD: FOX 45 (WBFF)
Indianapolis, IN: FOX 59 (WXIN)
San Diego, CA: FOX 6 (XETV)
Charlotte, NC: FOX 18 (WCCB)
Hartford, CT: FOX 61 (WTIC)
Raleigh, NC: FOX 50 (WRAZ)
Nashville, TN: FOX 17 (WZTV)
Kansas City, MO: 38 THE SPOT (KMCI)
Cincinnati, OH: FOX 19 (WXIX)
Milwaukee, WI: IND 41 (WMLW)
Columbus, OH: FOX 28 (WTTE)
Salt Lake City, UT: FOX 13 (KSTU)
Greenville, SC: FOX 21 (WHNS)
San Antonio, TX: FOX 29 (KABB)
Grand Rapids, MI: FOX 17 (WXMI)
West Palm Beach, FL: FOX 29 (WFLX)
Memphis, TN: FOX 13 (WHBQ)
Norfolk, VA: FOX 43 (WVBT)
New Orleans, LA: FOX 8 (WVUE)
Oklahoma City, OK: FOX 25 (KOKH)
Harrisburg, PA: FOX 43 (WPMT)
Buffalo, NY: FOX 29 (WUTV)
Albuquerque, NM: FOX 2 (KASA)
Providence, RI: FOX 64 (WNAC)
Louisville, KY: FOX 41 (WDRB)
Las Vegas, NV: FOX 5 (KVVU)
Fresno, CA: WB 59 (KFRE)
Jacksonville, FL: FOX 30 (WAWS)
Wilkes-Barre, PA: FOX 56 (WOLF)
Albany, NY: FOX 23 (WXXA)
Tulsa, OK: FOX 23 (KOKI)
Richmond, VA: FOX 35 (WRLH)
Knoxville, TN: FOX 43 (WTNZ)
Dayton, OH: FOX 45 (WRGT)
Mobile, AL: FOX 10 (WALA)
Lexington, KY: FOX 56 (WDKY)
Charleston, WV: FOX 11 (WVAH)
Flint/Saginaw, MI: FOX 66 (WSMH)
Roanoke/Lynchburg, VA: FOX 21/27 (WJPR/WFXR)
Toledo, OH: FOX 36 (WUPW)
Honolulu, HI: FOX 2 (KHON)
Springfield, MO: FOX 27 (KSFX)
Syracuse, NY: FOX 68 (WSYT)
Fort Myers, FL: FOX 36 (WFTX)
Madison, WI: FOX 47 (WMSN)
Plattsburgh, NY: FOX 44 (WFFF)
Baton Rouge, LA: FOX 44 (WGMB)
Johnstown, PA: FOX 8 (WWCP)
Brownsville, TX: FOX 2 (XHRIO)
Amarillo, TX: FOX 14 (KCIT)
West Monroe, LA: FOX 14 (KARD)
Boise, ID: FOX 12 (KTRV)
Chattanooga, TN: FOX 61 (WDSI)
Columbia, SC: FOX 57 (WACH)
Eugene, OR: FOX 34 (KLSR)
Fort Wayne, IN: FOX 55 (WFFT)
Jackson, MS: FOX 35 (WUFX)
Lansing, MI: FOX 47 (WSYM)
Lincoln, NE: FOX 4/17 (KSNB/KTVG)
Montgomery, AL: FOX 20 (WCOV)
Omaha, NE: WB 15 (KXVO)
Reno, NV: FOX 5 (KRXI)
Rochester, NY: FOX 31 (WUHF)
Springfield/Champaign, IL: FOX 27/55 (WCCU/WRSP)
Tallahassee, FL: FOX 49 (WTLH)
Topeka, KS: FOX 43 (KTMJ)
Tucson, AZ: UPN 18 (KTTU)
Wichita, KS: FOX 24 (KSAS)
The channel that sonic x is on 4 fios is channel 12 kk 
Sonic X has recently been played on channel 5, on 4kids.tv at 11:30 on Saturday mornings.
there is no animated sonic tv series after sonic x. sonic x IS the last sonic TV series.
Sally isn't in Sonic X
the Sonix X zone - it is check Sonic (disambiguation)
Sonic X season 1-2 was first aired on channel 10 during Cheese TV weekday mornings, then the 3rd season was aired on channel 7 at 11am during the Jetix segment, then 6:30am Saturday mornings but now it is over.
Sonic X
The channel that sonic x is on 4 fios is channel 12 kk 
Yes it will be
Since the 3rd season was never aired in Japan I'd assume no, there will be no more Sonic X.
channel 9
It's on channel 4.
The channel for Sonic X is Cowpox, channel 11. OK there is no channel 11 cause i have direct TV so it's Ashely channel 57,394,395. And its in the Saturday's in the morning.
678
No there won't be as season 3 of Sonic X, though it was made, never aired in Japan signifying that it wasn't popular.
FOX on Saturday mornings (Sonic X)
Yes, Sonic X has been finished since May 06, 2006, where the last episode, being episode 78 was aired.