The current online code incorporates ordinances passed through 10 December 2012. The most recent codified ordinance is Ordinance 124063.

http://clerk.seattle.gov/~public/toc/table.htm

Ordinance number	Code sections affected
124036	Amended § 18.28.010
124039	Amended §§ 9.25.100, 9.26.020, 9.26.025, 9.25.100; added § 9.25.200
124040	Amended §§ 9.25.030, 9.25.045, 9.25.081, 9.26.050 and 9.26.060
124041	Amended § 17.19.010.B
124042	Amended §§ 17.16.010, 17.16.015, 17.16.020, 17.16.030, and 17.16.033; added § 17.16.005
124044	Amended §§ 22.602.045, 22.602.050, 22.602.070, 22.602.080, and 22.602.090
123046	Amended §§ 22.900A.040, 22.900B.010, 22.900B.020, 22.900B.030.B, 22.900B.060, 22.900C.010, 22.900D.010, 22.900D.030, 22.900D.060, 22.900D.070, 22.900D.080, 22.900D.090, 22.900D.100, 22.900D.110, 22.900D.130, 22.900D.140, 22.900D.145, 22.900D.150, 22.900D.160, 22.900D.170, 22.900E.010, 22.900E.020, 22.900E.030, 22.900E.040, 22.900E.050, 22.900E.060, 22.900E.070, 22.900E.080, 22.900F.010, 22.900F.020, 22.900F.030, 22.900F.050, 22.900G.010, 22.900G.015, 22.900G.020, and 22.900G.030; added §§ 22.900E.090 and 22.900G.070
124049	Amended §§ 21.33.010, 21.33.030, 21.33.050, 21.33.070 and 21.76.040.A.2
124050	Amended §§ 21.28.040.B and 21.76.040.A
124051	Amended §§ 21.28.040.B.3, 21.33.030.D.3 and 21.76.040.A
124056	Amended §§ 6.255.100.A21.40.050, 21.40.060, 21.40.070, 21.40.080, 21.40.085 and 21.76.040.B
124060	Amended § 23.72.010.C
124063	Amended §§ 11.16.315, 11.23.150, 11.72.351, 11.72.260, 11.73.050, 11.76.005, 11.76.010, 11.76.015, and 11.76.020; added §§ 11.14.237 and 11.23.160