PHILIP A. BRIMMER, District Judge.
This matter is before the Court on Plaintiff Clarendon National Insurance Company's Response to the January 7, 2019 Order to Show Cause (Docket No. 13) [Docket No. 14] and the First Amended Complaint for Declaratory Judgment [Docket No. 16]. Plaintiff asserts that this Court has subject matter jurisdiction pursuant to 28 U.S.C. § 1332. Docket No. 1 at 4, ¶ 15; Docket No. 14 at 4; Docket No. 16 at 4, ¶ 15.
On January 7, 2019, the Court identified two deficiencies in plaintiff's jurisdictional allegations: (1) plaintiff's allegations "on information and belief" were insufficient to establish subject matter jurisdiction; and (2) plaintiff had not alleged the citizenship of each of the members of defendant Clay Street Condos, LLC. Docket No. 13 at 2-3.
On January 16, 2019, plaintiff filed an amended complaint along with a response to the Court's show cause order. See Docket Nos. 14, 16. As noted in plaintiff's response, the amended complaint affirmatively alleges defendants' citizenship without resorting to "information and belief." See Docket No. 14 at 4; Docket No. 16 at 3-4, ¶¶ 8-13. The amended complaint further states that the only member of defendant Clay Street Condos, LLC is defendant Generation Development, a "Colorado limited liability company," whose sole member is Chris Lonigro, "a resident of Colorado." Docket No. 14 at 3; Docket No. 16 at 3-4, ¶¶ 11-13.
Plaintiff's amended allegations are insufficient to establish the citizenship of defendant Clay Street Condos, LLC. While plaintiff correctly traces defendant's citizenship through multiple layers of ownership, plaintiff's allegation that Chris Lonigro is "a resident of Colorado" is not relevant to the issue of diversity jurisdiction. Domicile, not residency or mailing address, is determinative of citizenship. Whitelock v. Leatherman, 460 F.2d 507, 514 (10th Cir. 1972) ("[A]llegations of mere `residence' may not be equated with `citizenship' for the purposes of establishing diversity."); see also Mississippi Band of Choctaw Indians v. Holyfield, 490 U.S. 30, 48 (1989) ("`Domicile' is not necessarily synonymous with `residence,' and one can reside in one place but be domiciled in another." (citations omitted)). The Court is therefore unable to determine the citizenship of defendants Generation Development and Clay Street Condos, LLC.